The Impact of Coffee Ground Amount on Pour-Over Coffee Extraction. Techniques for Pour-Over Coffee

Understanding Filter Cup Sizes and Coffee Brewing

Anyone who has shopped for a dripper has noticed labels like "1–2 cup" or "3–4 cup." These size designations matter more than they first appear, because the capacity of the filter cup shapes how much ground coffee you can brew at once — and the amount of grounds, in turn, changes everything about how the extraction should be handled. So how do you adapt your brewing as the dose changes?

The Yirgacheffe Region

Yirgacheffe is a small town with a population of roughly 20,000, yet its name carries enormous weight in the coffee world. Three adjacent growing areas — Wenago, Kochere, and Gelena Abaya — produce coffees so similar in character that they are commonly grouped under the Yirgacheffe umbrella.

Culturally and geographically, Yirgacheffe has much in common with its neighbor Sidamo. Still, Yirgacheffe seems to have drawn the luckiest hand: its combination of altitude and terroir is uniquely favorable. At its best, the coffee offers floral notes, lively citrus acidity, lemon-like aromatics, and a silky, rounded mouthfeel.

The Worka Cooperative

The Worka Cooperative sits in the southern part of the Gedeb district. Founded in 2005, it joined the Yirgacheffe Coffee Farmers Cooperative Union (YCFCU) that same year and has built a reputation for excellent natural-processed Yirgacheffe. Around 300 coffee farmers belong to the cooperative. For its part, YCFCU was established in 2002 and today encompasses 26 other cooperatives, representing more than 45,000 coffee farmers in total.

Brewing Guide by Serving Size

To show how this works in practice, FrontStreet Coffee brewed its washed Yirgacheffe Worka at three different doses. For a single serving, we typically use 15 grams of coffee at a 1:15 coffee-to-water ratio with 90°C water, a medium-fine grind, and a total brewing time of about two minutes. The cup opens with clear lemon and floral notes and finishes like lemon black tea.

Two servings: Add 10 grams for the next person, bringing the dose to 25 grams. Keep the same 1:15 ratio and 90°C water. Because more grounds mean a longer brew, grind slightly coarser to compensate. Aim for roughly 2 minutes and 20 seconds. The result highlights florals, lemon, and a white grape juice acidity, with a juicy, substantial body.

Three servings: Brewing 30 grams of coffee is genuinely demanding — even with the Key #02 diamond dripper it proved tricky. FrontStreet Coffee settled on the BG at a 6A setting, which is quite coarse, and split the pour into four stages: 40 grams of water for a 30-second bloom, then separate pours at 160 grams, 240 grams, and 350 grams with a gradually increasing flow. Finally, a generous, fast pour straight into the center carried the brew to 450 grams, for a total time of about 3 minutes and 30 seconds. The lemon black tea character came through vividly, backed by honey-like sweetness.

The lesson from these trials: when the dose grows and the brew stretches longer, use a coarser grind to keep the extraction rate in check and avoid over-extraction. The high-flow pour at the end serves two purposes — it thins out the concentration of the coffee liquid while sweeping out the last of the readily soluble material.

FrontStreet Coffee Recommendation

If this article has you craving a bright, floral pour-over, start with FrontStreet Coffee's Washed Yirgacheffe. It is the classic introduction to Ethiopian coffee: white jasmine florals, bright citrus and lemon acidity, and a distinct tea-like finish, all at an approachable price. For brewing, FrontStreet suggests a V60 with 15 grams of coffee, a 1:15 coffee-to-water ratio, water at 90–91°C, and a medium grind sized like fine granulated sugar. Bloom with 30 grams of water for 30 seconds, pour up to 125 grams by the one-minute mark, then finish the remaining pour around 1 minute 35 seconds, with full drawdown between 2:00 and 2:10. The result is a clean, luminous cup that shows exactly why Yirgacheffe became a household name.