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Why do you blend?

Postby ValentinDavid on Mon Aug 10, 2009 8:00 am

I am wondering why coffee is usually blended. I tried to look around on the internet the reason. But I did not find anything that was consistent. Just some different point of views.

I have collected some ideas why blends could be useful. Some from what I except, other, what I read.

  • The taste of a single origin is not complex enough (coffeeresearch.org). Which I disagree. Flavors in coffee seems so hard to find that not mixing and keep the taste simple would be a plus. I see it like blending red wine. The good red wines are from single domains. I can understand you can fix the bitterness, acidity, etc. by blending. But I have troubles to see how mixing aromas will lead you to something great.
  • It is a way to use cheaper beans, while not completely ruining the taste (sweetmarias.com). This is maybe the only reason I would accept.
  • Some beans do look better, but do not taste good, like robusta (ineedcoffee.com).
  • You have ends of stock that are not big enough to make a whole batch.
  • This is a way to put your name somewhere, a signature (sweetmarias.com). Actually that would not be that stupid. I am French and I think arrogance is great.
  • You want to recreate the same taste you, or your customers are used to have with new crops (somehow an extension of the previous point). It would be like for cheap red wine.
  • You want a coffee to taste coffee.

So now. Is your reason in this list? Which one? Do you have any other reason?
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Postby coffee.me on Mon Aug 10, 2009 9:41 am

I usually do SO shots only. But when I blend great SOs (post roast) I usually get an even greater shot. Besides more balance, the blend results in new tastes; like when you mix two colors and get a third, totally different, color. So, basically, I blend when I get bored and want further enjoyment from my home roasts.
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Postby another_jim on Mon Aug 10, 2009 11:50 am

For large commercial roasters, blends are a necessity. They are a way of arriving at a consistent or signature taste every year at the lowest possible cost. A pleasantly consistent taste is easiest, a signature taste is harder and more expensive. A good example of pleasant and cheap is Lavazza's Qualita Rossa, their standard bar blend, that tastes mildy of nuts and chocolate, and consists (I'm guessing) of commodity level Brazil naturals along with some higher grade, and probably more expensive Robustas. A good example of a signature blend is Illy, which is a shot that is strongly reminiscent of how good, generic Central American coffee tastes brewed. To get this, they use specialty grade washed and pulp natural Arabicas from dozens of locations in the Americas.

The blends put out by small 3rd wave roasters are becoming more variable and fashion driven. They don't need consistency, they do need to blow the socks off their customers and create buzz. I also suspect they respond to what's hot in Barista competition and among afficionados (or at least the new internet chattering classes). Technically too, they are very different from the Italian blends; they use only two or three components, rather than dozens (big roasters will mix, e.g., eight Guatemalan coffees to get exactly the taste of that part of their blend).

For home roasters, blending is not necessary but very useful. At least three quarters of the coffees I buy and try with an eye towards espresso use are unsuitable as SOs. Some of these are total losers, but many are good in the cup but too unbalanced as espresso, where the constraints on balance are much tighter. I always like to have a sack of a boring, all middle flavor, caramel and chocolate coffee (usually a South American) to mix with these. This is especially useful when the a big SO source, like Ethiopia at the moment, has dried up or is having a bad year.
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Postby JonR10 on Mon Aug 10, 2009 11:58 am

ValentinDavid wrote:So now. Is your reason in this list?

No. None of the listed reasons applies to me. I blend attempting to combine flavors in a favorable way, such that the result is more than the sum of the parts. To me, it's similar to cooking and creating a new recipe

When you (being a Frenchman) cook, why do you combine ingredients? Why not just enjoy them individually? Is it because you use low-quality ingredients so you want to make up for that lack of quality by blending?

Of course not. You would use the finest ingrediaents you could get and combine them in ways to bring out the best elements and (hopefully) create something special where the individual parts disappear and something new and wonderful is created. Even something as simple as a sandwich...imagine eating the different elements individually as opposed to making a blend and tasting it all together.

I taste the coffees as single origin espresso (or traditional brew) first, and then combine in different ways to see how the different beans interact when brewed together. Some origins complimet each other beautifully to add nuance and/or alter the balance in the cup. Sometimes the results are surprising.

To me, blending adds another dimension to the hobby


ValentinDavid wrote:You want a coffee to taste coffee.

I apologize, I do not understand this one. What does it mean?
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Postby orwa on Wed Aug 12, 2009 7:00 am

I seem to agree for the larger part with Valentin, except for one point. I am an Arab and I think that it's a dishonour not to find a better way to distinguish oneself other than using a bizarre recipe that no other one can replicate and call it a blend :P.

Coffee flavour is intrinsically difficult to be decomposed into elementary tastes, and is somehow messy. Therefore, in my opinion, unless the coffees to be blended were too similar to one another, or the blend had one such chief component, coffees can not be generally dealt with in a way similar to food ingredients.

I understand the reasoning mentioned in the case of the large commercial roasters, which is an application of the point "It is a way to use cheaper beans" mentioned by Valentin.
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Postby ValentinDavid on Wed Aug 12, 2009 1:54 pm

JonR10 wrote:When you (being a Frenchman) cook, why do you combine ingredients? Why not just enjoy them individually? Is it because you use low-quality ingredients so you want to make up for that lack of quality by blending?


First of all, there are lots of ingredients that are used for practical reasons rather than taste. For example, eggs, baking soda or yeast are often used as raising agents. To avoid crystallization of syrup, we use acids like lemon juice, or baking soda. To make things more viscous we can use starch, gelatin, agar-agar. To make chocolate more liquid, we use cream, to make it harder, we use butter. We use colorants. To avoid oxidation, we whip cream with N20. Also lots of ingredients are here just for the style. Icing on a cake looks very good, it does not really matter what taste it has. The ingredients might have an effect on the taste. But it is not always its first role. We also mix for other reasons. I like grilled steak, I like whiskey-pepper sauce. I could take them apart. But I find it more practical to eat them together. I knew a guy who dipped Camembert in his yogurt. That has nothing to do with taste. For the sandwich, yes I can eat ingredients by ingredients. But eating them inside the bread is more practical because you do not need a fork. Note that if you mix your sandwich in a mixer like a milkshake, you will have a completely different experience. I still prefer to eat it as a sandwich because I prefer to feel distinct tastes.

But you are right. There are cases were we mix the tastes. But it is usually using completely different ingredients. Which means that if you want to add a taste of chocolate in your coffee, you would put chocolate, and not try to find another coffee with taste of coffee. I think you can compare blending of coffee to blending of wine, but hardly to a food or cocktail recipe.

So what I understand from what you said is about the balance of the cup. You are fixing the coffee. I accept this explanation.

JonR10 wrote:I apologize, I do not understand this one. What does it mean?


People are used to the taste of things. And if you tend to make something different, the surprise will rarely be good. Even if the new taste is way better. I do SOs and I am please by the small differences I get each time. But when a friend used to the coffee from 7/11 try my coffee, he/she will complain there is too much flavor. And I mean, this is a complaint. I have the impression that people are not very open-minded about taste. The problem can be also seen in tradional cuisine. People tend to like things because they are traditional not because they taste better. But nothing says that traditional food should taste better.
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Postby Espin on Thu Aug 13, 2009 11:30 am

The whole is more than the sum of the parts.

I could eat garlic and cheese, and drink some cream with it. It would not be Alfredo sauce.
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Postby JonR10 on Thu Aug 13, 2009 11:49 am

ValentinDavid wrote:So what I understand from what you said is about the balance of the cup. You are fixing the coffee. I accept this explanation.

Maybe it's just a language issue, but I interpret this to mean that you believe I am covering a defect (the word "fixing" implies there was something broken or not correct). This is rarely the case for me personally, and generally not the reason I blend



Espin wrote:The whole is more than the sum of the parts.

I could eat garlic and cheese, and drink some cream with it. It would not be Alfredo sauce.

This more accurately captures my intent, i.e. looking for combinations that creates a taste that is more than the sum of the parts
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