Three pillars of coffee: the coffee beans, the grinder, and the water. Any one of the three is bad, the stool falls over. Blade grinders leave a variability of fines and boulders, yielding under- and over-extracted flavors. They don't cancel eachother out, so it just makes the cup taste muddy. A good burr grinder will leave minimal fines, and a uniform max size of grounds. Final cup should have clear flavor, and grinder is a big part of that. Answer from the_cox on reddit.com
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Serious Eats
seriouseats.com › burr-vs-blade-coffee-grinders-7557180
Burr Vs. Blade Grinders: Which Is the Best for Coffee?
April 10, 2025 - Below, we'll break down the differences ... burr grinders. ... The blade grinder on the left produced large boulders and small fines, while the high-quality burr grinder on the right ground even-sized particles....
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You can use a blade grinder for nuts and spices as well, provided that the 'chamber' and blades are 100% stainless steel. It's pretty easy to clean the oils that would otherwise affect your next batch of beans.

That's not the case with a burr grinder, especially the ceramic variety - a hand-full of hazelnuts in one of those will mean anything coming out of it picking up that taste for quite a while.

I use my blade grinder mostly for that these days, since I own several burr grinders. Great at grinding up peanuts, dry corn kernels, dry spices and that sort of thing.

To clean it, I wash it with a moist cloth as usual and then use a moistened antiseptic towelette (like they use to wipe your skin with prior to giving you an injection) - there's no trace of what I just ground in it once I'm done.

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The most important distinction between blade and burr grinders is the result:

Blade

Coffee beans circulate across the spinning blades. No matter how long or short the grind, there is extreme heterogeneity in particle size--that is, you will find larger bean fragments with near-dust-size ones, with everything in between. If you use a pour-over or drip brewing method, you might even see whole beans floating to the top. Not surprisingly, you'll get very uneven extraction from these different particles, no matter what the brewing method.

If you grind long enough to decimate all the beans, you'll find a lot of fine coffee dust and sediment in your cup. Too short a grind, and you get a lot of beans and bean pieces that can't present enough extractable surface area to the hot water, leading to a thin, weak cup. Waste of coffee, to be sure.

Also, it's almost impossible to grind any two batches consistently, since grind time is dependent on bean quantity, type of roast, variety of bean--well, everything. So today you'll get a disappointing cup, and tomorrow you'll get another disappointing cup for some other reason. Therefore I recommend a Conical Burr grinder.

Conical Burr

Beans move through once. When you set your burr grinder to a certain fineness, there will be very little heterogeneity in particle size. (N.B. Spend more on the grinder, get a more even grind.) This allows you to experiment with the grind as well as the quantity until it's perfect for you, then replicate that recipe perfectly every time.

Some tips on finding the right burr grinder for your needs:

  • Prices vary from 1500 for non-commercial grinders. I'm happy with my $350 Rancilio, which I've had for 10 years without a hint of trouble.
  • How you like your coffee matters. A more expensive grinder will do better fine grinds, as for Arabic-style (i.e. Turkish, Greek, Lebanese) coffee. If you don't drink that, don't spend more for it. Most burr grinders perform best in the automatic drip range.
  • The under-$100 burr grinders still manage to throw a lot of fine coffee dust into the grind. Do your research before buying.
  • Consistency in grind is critical to good espresso. If this is important to you, be prepared to spend as much on the grinder as you spent on your espresso machine. It's for a good cause. Why hobble your good machine with sub-par ingredients?
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Reddit
reddit.com › r/coffee › confession time, i can't taste a difference between blade and burr ground coffee. what am i doing wrong?
Confession time, I can't taste a difference between blade and burr ground coffee. What am I doing wrong? : r/Coffee
November 7, 2020 - I'd be dead happy if I found out that blade grinders are really just as good as burr grinders though. ... I have a membership to ATK and access to their write up online (mostly the same info as in the video). RE the samples: 'we brewed three batches of coffee using the same beans ground in the most even burr grinder, the least even burr grinder, and our top-rated blade grinder'.
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BobIsTheOilGuy
bobistheoilguy.com › home › forums › general and off topic › foods/cooking/beverages
Coffee Grinders-- Burr vs. Blade | BobIsTheOilGuy
March 9, 2011 - We bought the same one a couple of years ago after burning thru a couple of blade type. I am inclined to believe the burr is at least more durable. It still works great. ... My blade grinder is not very good at getting a fine grind, very coarse results. You get what you pay for.
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Reddit
reddit.com › r/coffee › burr vs blade taste tests.
r/Coffee on Reddit: Burr vs Blade taste tests.
September 10, 2013 -

I am considering a nice burr grinder but can't find much empirical evidence showing they provide a consistently superior cup. If fact, most studies showed a slight preference for blade ground:

Bruer

Dr Bunsen

Cooks illustrated

Is a burr grinder really worth the significant cost? Are the any non-anecdotal sources showing the benefits of burr grinders for home use?

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Is a burr grinder really worth the significant cost? Yes. As for empirical evidence, when someone manages to find a definition for what constitutes optimal grind or optimal taste, then you might start seeing evidence. The first link used a cold-brew system, which is particularly tolerant of inconsistent grind size (yep, you can make delicious cold brew with a drink-bottle blender). The second link used an aeropress, which is also (apparently) far more fogiving than espresso or french press when it comes to inconsistent grind. The third link doesn't really lend much weight to anything; I'd contend that anyone who turns out a bitter cup from a decent burr grinder doesn't know what they're doing, either when it comes to making coffee or selelcting beans. All that said, it comes down to taste, which is a subjective thing, and where you'll see complete make-or-break results between blade/burr or cheap/expensive burr is with espresso. If you're going to focus on brewed coffee, and you enjoy what you get from a blade grinder, that's great; save your paper for something else. That said, grinder quality does show itself markedly in french press, at least, and I'd be recommending a Virtuoso, myself.
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First paragraph of your first link reads: "In the previous post, we looked at the influence grind size has on the taste and extraction of cold brew. From what we found, it definitely plays an important part. In that experiment, we used a burr style grinder for our tests. The burr grinder, shown in the above image at left, gave us a consistent grind with a narrow particle size distribution. For this reason, burr grinders are almost exclusively used in the coffee industry. However, chances are, the home user is more familiar with the popular blade style grinders like the one in the image at the right. These grinders lack the consistency and narrow particle size distribution of the burr grinders, but are often a much more affordable option." The second link you posted says that people preferred the blade grinder but doesn't mention at all what particle size he was using from the burr grinders. He's missed a vital point that, yes, uniformity is incredibly important, but dialling in is first and foremost. That's kind of the point of a burr grinder, it allows you to make adjustments to get the best possible result. The third one says that "We were surprised to discover that the coffee brewed with blade-ground beans was less likely to turn out bitter." This is almost definitely a matter of over extraction. The beans were probably ground uniformly, but too fine, an easy mistake to fix if you know how. It's kind of not really up for debate. Burr grinders have an empirically better control over particle size, which is surely the most important variable in brewing coffee. Great coffee is coffee that's been dialled in properly, and grind size is THE variable that you need control over. There's so many reasons for this, just so many. So first of all, a half decent burr grinder is not expensive. A hario skerton or slim is cheap as hell considering what it allows you to do. Secondly, what kind of brew method do you use?
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Moccamaster
us.moccamaster.com › moccamaster coffee articles › burr grinder vs. blade grinder: what is the difference?
Burr Grinder Vs. Blade Grinder: What is the Difference? - Moccamaster USA
April 12, 2023 - Burr grinders also tend to be quieter than blade grinders, and do not heat the beans as much, if at all, like a blade grinder can. Conical burr grinders have a cone-shaped ring inside another hollow cone-shaped ring that directs the beans downward, ...
Find elsewhere
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Home-Barista.com
home-barista.com › grinders › equipment-review-burr-vs-blade-coffee-grinders-t58909.html
Equipment Review: Burr vs. Blade Coffee Grinders
May 24, 2019 - Found this video because a person on Reddit was advocating that you don't need an expensive grinder like the Kinu after op was praising the in-cup quality he got from getting one.
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Reddit
reddit.com › r/coffee › hand burr grinder vs electric blade grinder
r/Coffee on Reddit: Hand burr grinder vs electric blade grinder
March 31, 2011 -

Hi Guys,

I was thinking of buying a hand burr grinder but I was just wondering what the particular advantage over the standard blade type grinder was? Does it grind finer or more evenly? Can you actually taste the difference?

FYI I usually make coffee with a french press, moka pot or domestic espresso machine. I'm thinking of getting a aeropress and possibly a chemex (or other drip/filter coffee maker) after Xmas. I'm also still pretty amateurish; I don't weigh my coffee, time the brew or take an exact temperature of the water.

Any thoughts?

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OutIn
outin.com › home › blogs › blogs
How to Choose a Coffee Grinder: Burr vs Blade Guide
April 11, 2025 - Burr Grinders: These grinders crush coffee beans between two abrasive surfaces called burrs. One burr remains stationary while the other rotates, creating a crushing action that grinds beans to a specific size determined by the distance between ...
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Reddit
reddit.com › r/coffee › cheap burr grinder vs blade grinder
Cheap burr grinder vs blade grinder : r/Coffee
September 2, 2019 - I started with a manual burr grinder, got fed up with the grinding time and bought an electric blade grinder. I used it for some time, then tried again the burr grinder : the difference is HUGE ! It makes a much more consistent grind and extraction is waaay more predictable with the burr grinder.
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Reddit
reddit.com › r/coffee › burr grinder vs blade grinder for french press experiment
r/Coffee on Reddit: burr grinder vs blade grinder for french press experiment
January 15, 2015 -

Surprisingly not everyone thinks that even a cheap burr grinder is better for french press than a blade grinder (see earlier post)

So, as I don't know what to do with my free time, I've conducted a little experiment where I compared a 30 years old burr grinder and not the cheapest blade grinder:

imgur album

The result is as expected - burr grinder shows more consistency in grind size and produces less fines (coffee tastes better too)

PS sorry for grammatical and other errors - I'm not used to writing in English

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Noticed the last image noting it is an old Soviet burr grinder. Which model is it? Not like I am looking to pick up a new one but the fact its Soviet-made has me somewhat interested.
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On the low end of grind quality, the factor that influences results the most is the volume of fines produced. Fines limit effective control of extraction much more than the size or consistency of the boulders. Fines over extract regardless of manipulation of other parameters while boulders are more responsive to manipulation to avoid underextraction. Crappy burr grinders improve upon the size and consistency of the boulders much more than they improve upon fines and the improvement in fines required to improve results is significant. Crappy burr grinders make the grind look better, but only because it is easy to assess boulders and much more difficult to assess fines visually. With aggressive technique, blade grinders can produce results on par with crappy burr grinders. With little or no technique, a cheap burr grinder may be very slightly better than a blade grinder. I usually recommend a second hand blade grinder to those on very tight budgets. If you only spend $5-$10 on a blade grinder to start your coffee journey and save $10/month, you will have enough to buy a respectable entry level grinder such as an Encore refurb inside a year. If you spend $40 on a crappy Hario Skeleton, the results won't be much better once you have an idea of what you are doing and if you are putting that same $10/month toward gear, you don't have any grinder for 4 months and it's over a year before you have saved enough for an Encore.
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Reddit
reddit.com › r/coffee › blade vs burr grind taste test
r/Coffee on Reddit: Blade vs Burr Grind Taste Test
June 7, 2016 -

So, I just did a side by side taste test between a decent burr grinder (Baratza Encore) vs an average blade grinder (Krups 3oz).

What I did:

-Used 205 F tap water as measured by electric kettle, and Sumatra (medium-roast) beans roasted locally 12 days ago and kept in airtight container. "#10" grind on the encore, and an approximation of the same grind using the Krups. 15g coffee to 230g water ratio. Brewed in Chemex 8 cup pour-over with bleached Chemex brand filters, pre-wetted and warmed immediately prior to brewing.

-Total pour-over brew time for Encore grinds was 1m48s vs 2m16s on the Krups. It seemed that the water drained slower from the blade ground beans. Both brews had a 30s bloom with 45g water at the beginning of pour over.

Results:

-Honestly, any difference between the cups is very subtle. I can't say that I have any preference one way or another. The blade ground seems to have a more smokey/earthy taste than the burr, but it is very slight. If someone came in and mixed the cups up, I don't know that I could differentiate one from the other.

I'm curious, has anyone else tried this? If so, what were your results? I've always heard that burr grinders are an essential piece of a good cup of coffee, and I'm pretty surprised at how little of a difference it seems to make in my simple pour-over setup.

Tl;DR: I tried both burr and blade ground coffee side by side, and they are remarkably similar. Am I alone thinking this? Has anyone else tried a side by side and what do you think?

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Reddit
reddit.com › r/coffee › can you really taste the difference between a burr and blade grinder?
r/Coffee on Reddit: Can you really taste the difference between a burr and blade grinder?
September 25, 2019 -

Maybe my taste buds are sh*t, but I honestly don’t taste the difference when I have my preferred grind size for pour over?

The only difference I taste is that my local cafe always has better coffee than at home haha

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The Roasterie
theroasterie.com › blogs › news › burr-grinder-vs-blade-grinder-whats-the-difference
Burr Grinder vs Blade Grinder: What's The Difference? – The Roasterie
But, flat burrs are louder than conical burrs and utilize more energy and heat during the grinding process, which makes them less ideal for commercial or even at-home use. But when precision is required, flat burrs are the better option. Blade grinders are a more common option for those just entering the world of fresh coffee...
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Reddit
reddit.com › r/coffee › are blade coffee grinders really that bad?
r/Coffee on Reddit: Are blade coffee grinders really that bad?
September 3, 2020 -

I want to know your opinions and experiences about blade coffee grinders, are they really that bad? Should I just buy preground coffee instead of using this kind of grinder?

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Reddit
reddit.com › r/coffee › are burr grinders that necessary?
r/Coffee on Reddit: Are burr grinders that necessary?
July 29, 2025 -

I make a cup or two of coffee using a chemex pour over every day. Generally, I have 4 or 5 different bags of beans I’ll cycle between.

I grind my beans using a standard oxo blade grinder that I got for $15 or something. It’s better than the pre-ground coffee I was buying.

I’ve had a few people lately tell me I need to upgrade to a burr grinder. I understand the logic behind them (more even particles, beans are ground rather than cut by blades, yada yada) but are they that much better in the end?

If it’s REALLY something I should look into, can anyone recommend one that would accommodate a small amount of beans at a time? I don’t want a big hopper to deal with as I’m generally drinking something different every morning

Edit: I’m starting with a cheaper grinder from the Greater Goods brand (good reviews and it’s being bought for me so I can’t complain) eventually I will get the baratza encore more than likely.

I can’t believe how many of you want me to hand grind coffee beans. I get it, but I’m not about that life at 5AM

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Reddit
reddit.com › r/coffee › burr grinders. what's the difference?
r/Coffee on Reddit: Burr grinders. What's the difference?
July 17, 2014 -

So I've been using a blade grinder for a while and I'm pretty damn sick of how inconsistent the grind I'm getting is. I just wanted to consult r/coffee about what the difference is between a good and a bad burr grinder. Like is a cheap burr grinder still CONSIDERABLY better than a blade grinder? And what makes a difference between a good and bad burr grinder other than price?

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Burr grinder > blade grinder, almost any day. Burrs crush the beans, and blades chop the beans. I like to think about it this way: a mortar and pestle allows you to grind spices into a fine powder that is pretty consistent. But then think about chopping peppercorns with a knife - you're definitely going to get big pieces and small pieces, and they're likely going to be different sized. It'll take you ages to get it to be consistent. The grind is one of the most important factors of the coffee to get an even extraction, it could be the difference between a both over- and underextracted cup, and a cup that is completely in balance (even when all other variables are constant). Cheap vs. expensive burr grinders are about the movement of the burrs, and durability. There are differences between steel and ceramic (debates about chipping pieces, and durability in keeping them from getting dull over time). Ones that last longer and move less from side to side are more expensive, and on the cheaper end there are grinders like the Hario Mini Mill. If you've ever used one, you can feel that the burrs move both up and down and left and right, resulting in (still) some larger and some smaller pieces. Just to give you some examples: typically, the grinders recommended in this sub are the Porlex mini and tall, Hario Mini Mill and Skerton, and the Lido 2 for hand grinders. Going up to Electric you've got the Baratza Encore, Virtuoso, Preciso, and Vario, and then you're going up to Mazzer Minis, the EK, and the the ultra nerdy stuff.
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Simply put: There is overlap in quality between a good blade grinder and a bad burr grinder. BUT, a decent burr grinder is CONSIDERABLY better than a blade grinder. The consistency of the grind is what matters. You can get great quality in a hand grinder like the Porlex, or get a Baratza Virtuoso for more money. To me, the clean, round taste from well-ground coffee is imcomparable to the muddy harsh taste of badly-ground coffee.