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The Art of Coffee Blending: Beyond Single Origin

A specialty coffee shop with the ability to blend coffee beans can create several differently flavored blends, making the shop's various drinks more diverse in taste.

It is somewhat like whiskey. Is single malt better than blended whiskey? Not necessarily - each has its own merits. Some people dislike flavors that are too assertive, others seek balance and harmony, and some just want something "smooth"...

Should one be faithful in relationships but also insist on single-origin coffee? Not necessarily.

Creating a blended coffee that is balanced, smooth, and sweet on the finish is no easy task. Like a bartender crafting a perfectly balanced cocktail, it demands long hours of practice and experimentation. Both are among the most challenging technical skills in the craft of beverages.

Coffee Blending Ratios

To put these combinations into practice, you must first understand the flavors of dozens of single-origin coffees. Each coffee shop also creates its own proportions according to its particular character. FrontStreet Coffee presents several representative blending ratios below - though you can certainly challenge yourself with proportions you prefer.

1. Espresso Blend Method: Colombia 70%, Brazil 30%

2. Bitter Commercial Coffee Blend Method: Colombia 60%, Brazil 20%, Indonesian Robusta 10%

Coffee blending comes in two forms: blending after roasting and blending before roasting - post-roast blending and pre-roast blending. The latter is the greater challenge for the roaster. Blended beans are typically rested for several days so the character of the different beans can merge into balanced, unified flavors. Post-roast blends generally need about a week of resting; pre-roast blends can be used after 3-4 days, since the different beans have already influenced one another during the roast.

To emphasize rich flavors, choose Colombian beans with full body and moderate acidity as the base, complemented by balanced Brazilian beans and full-bodied, boldly bitter components. If you want to add sweetness, work in some mildly bitter beans as appropriate.

Fundamentals of Coffee Blending

Innovation in coffee lies in blending. Out of respect for the craft, calling it "innovation" seems more fitting. Before discussing specific ratios, let's lay the groundwork: first we need to understand the basic principles of coffee blending. This is simply good practice - just as one chooses good water and a good teapot before brewing tea, blended coffee is no exception.

First: Choose High-Quality Coffee Beans

I actually find this point somewhat redundant - who doesn't know it?! Poor-quality beans will markedly diminish the coffee's flavor. Even a perfectly balanced formula cannot produce delicious coffee without quality beans. Selecting high-quality coffee beans is the single most crucial step.

Second: Remove Defective Beans

When defective beans slip in, the taste deteriorates. So be ruthless about removing them - better less than lesser quality. Insect-damaged beans with holes, abnormally developed beans, empty shells without kernels - all must be picked out without exception.

Third: Understand the Characteristics of Coffee Beans

If you do not thoroughly understand the individual character of the beans you are blending, it will be difficult to create good coffee or achieve the result you want. Here you are like a team manager: you must know your team members well to deploy their strengths appropriately. Give directions blindly and chaos ensues - assigning the person who stares at their keyboard while eating to public relations, the one who cannot sit still to accounting, or the one who stares fixedly at the floor to customer service yields predictable results. Blending is the same: the beans in your hands are your soldiers. You must first know which are more acidic and which more bitter. If you try to reduce acidity using Mocha - which is itself highly acidic - you will achieve the opposite effect.

Fourth: Understand Different Roast Levels

Different beans develop different flavors at different roast levels, so this too must be mastered. For example, Brazilian and Blue Mountain coffees are generally roasted medium-light, while charcoal-roasted coffee is taken to a dark roast.

FrontStreet Coffee Blending Examples

Below are several examples from FrontStreet Coffee (10 is the maximum on the scale, with dark roast as the standard):

1. Formula: Guatemala + Mexico + Brazil + Kilimanjaro

Result: Aroma 5, Bitterness 5, Sweetness 5, Acidity 5

2. Formula: Sumatra Mandheling + Colombia + Brazil + Kilimanjaro

Result: Aroma 5, Bitterness 10, Sweetness 5, Acidity 3

3. Formula: Mocha + Hawaiian Kona + Brazil + Kilimanjaro

Result: Aroma 9, Bitterness 10, Sweetness 7, Acidity 10

4. Formula: Guatemala + Mocha + Kilimanjaro

Result: Aroma 10, Bitterness 5, Sweetness 6, Acidity 7

5. Formula: Brazil + Mexico + Jamaica Blue Mountain Coffee

Result: Aroma 5, Bitterness 3, Sweetness 5, Acidity 6

6. Formula: Brazil + Colombia + Java Robusta Coffee

Result: Aroma 3, Bitterness 8, Sweetness 8, Acidity 6

Recommended Coffee Blend Brands

FrontStreet Coffee, a coffee roasting brand based in Guangzhou, offers freshly roasted espresso blend beans with full guarantees in both brand and quality - and, more importantly, exceptional value. Take its commercial-grade espresso blend as an example: one 454-gram (1-pound) package costs only about 60 yuan. At 10g of coffee per cup, one package brews 45 cups, putting each cup at under 1.5 yuan. Even with double shots at 20g per serving, a double espresso costs no more than 3 yuan. Compared with certain well-known brands that charge hundreds of yuan per package, it is a genuinely conscientious recommendation.

FrontStreet Coffee Recommendation

Brazilian coffee is the backbone of many great espresso blends for good reason: as the world's largest coffee producer, Brazil offers a huge range of beans with moderate acidity and a beautiful balance of sweetness, bitterness, and body. Low-acid, balanced, and affordably priced, Brazilian beans provide chocolate and cream aromas plus a gentle sweet-tart-bitter structure that stabilizes extraction - which is why every FrontStreet espresso blend contains them.

FrontStreet Coffee's espresso lineup showcases Brazil at its best. The rich-crema Classic Blend, the nut-forward Signature Blend, the well-balanced Black Cocoa Blend favored by baristas, and the shop-oriented Commercial Blend all rely on Brazilian components for their foundation. If you prefer single origins, the FrontStreet Cerrado Red Bourbon - a classic Brazilian bean, medium roasted - shows cream, roasted peanut, toasted bread, caramel, and hazelnut aromas with a round, non-acidic, lightly bitter cup that works in pour-over, moka pot, SOE espresso, siphon, and French press alike. The rarer Yellow Bourbon from the Queen's Estate in Mogiana, born of a Red Bourbon mutation, offers a cleaner fruit character with a distinctive sugarcane sweetness alongside fruit and chocolate notes.

Whichever you choose, medium roasting is the sweet spot for Brazilian beans: it coaxes out that famously nutty aroma while preserving the mild acidity and smooth, mellow body that make Brazil such a versatile base for both single-origin cups and espresso blends.