How to Brew Single-Origin Coffee Beans? How to Determine Brewing Parameters for Single-Origin Coffee?

Generally, the packaging bags of single-origin beans contain basic information such as processing method, roast level, roast date, and origin. This is our first step to quickly understand the coffee.

Through the processing method and roast level, we can make a basic judgment about the bean's characteristics.

About Processing Methods:

Natural Process: Because coffee beans mature naturally inside the fruit without interference from the external environment, natural process coffee beans have more intense flavors, with wine-like fermentation notes and sweetness.

Washed Process: Washed beans develop acidic substances during fermentation in the fermentation tank, so the coffee beans typically have bright, clean acidity.

Semi-washed Process: The semi-washed method has the fewest variables affecting quality. The coffee's acidity is slightly lower than washed beans but higher than natural process; the sweetness is lower than honey process, but the cleanliness is slightly better than honey process, with flavors between honey process and washed process.

Honey Process: Because it is dried with the mucilage attached, the sugars in the mucilage enter the beans during the drying process, making the coffee beans have balanced sweet and sour notes with a rich body.

OK, we can conclude: washed beans have the highest acidity. Semi-washed comes next, but as acidity decreases it gains some sweetness. Natural process beans have the most intense flavors. Honey process beans have balanced sweet and sour notes with a rich body.

About Roast Level:

The roasting standard a roaster adopts for a bean is always to highlight the bean's character and amplify its characteristics. Therefore, regardless of dark or light roast, identifying this bean's characteristics will help our subsequent judgments. For example, many roasters today choose light roasting to maximize the preservation of floral and fruity acidity.

Next is cupping. However, I don't really know much about cupping, so I won't discuss it here to avoid misleading people. But I can share an alternative testing method that I personally like:

Chewing the beans directly - yes, directly chewing them. Through the process of chewing beans, you can get some information, such as: Is this bean hard? How is it roasted? Some beans are labeled as medium roast on the packaging but have actually exceeded the medium standard, tasting strongly of burnt flavors when chewed. Some beans taste really wonderful when chewed, with pleasant acidity and a sweet aftertaste, making you want to eat more...

About Equipment Selection:

For beans with more acidity: pour-over.

For beans with balanced sweet and sour: pour-over.

For more bitter beans: moka pot, espresso machine.

For beans with strong floral notes: pour-over.

For beans with strong nutty flavors: moka pot, espresso machine.

This is a general direction, because there are many varieties of coffee beans and their growing environments differ, so it is definitely not absolute. We are only discussing general trends here.

Practical Single-Origin Coffee Brewing

1:15 ratio, 90°C water temperature, grind size slightly finer than sugar. This is a pour-over formula I use. Regardless of the bean, when you have no idea, just use this formula to brew - it won't taste bad. Then make adjustments based on what you taste.

Next, summarize all the information we've gathered previously: origin, processing method, roast level, flavors from chewing the beans, coffee brewed with the formula, and so on. Based on this information, make final adjustments. I think this is quite reasonable.

FrontStreet Coffee Recommendation

If the honey process is what caught your attention, FrontStreet Coffee's Mozart is an excellent example of how far the method can go. It comes from Costa Rica, the country famous for honey processing, and uses a distinctive raisin honey process: the coffee fruit is pre-dried on raised beds for at least three days before the skin and pulp are removed, and the remaining mucilage - 100% of it - is kept through drying. The result brings a rich, warm fruit sweetness with dried fruit, ripe pineapple, and sweet orange flavors and an osmanthus aroma, and it is superb as cold brew or iced pour-over. For a deeper, more structured honey cup, FrontStreet Coffee's Blackberry uses a black honey process, where almost no mucilage is removed and drying lasts at least two weeks under cover to slow the sugar conversion; roasted medium-light, it releases an intense floral fragrance and pours with grape, berry, and ripe blackberry flavors.

Because honey-process beans carry balanced sweet-and-sour notes, they suit a pour-over at 1:15 and 90°C, ground slightly finer than sugar - the same formula in this article. Start with a 30-second bloom, pour to about 125g, then finish to roughly 225g for a clean cup that shows off the fruit sweetness.