How 6 Coffee Beans Taste in a French Press

If you've ever wondered how different single-origin beans actually taste when brewed in a French press—especially ones you can actually buy fresh—this is your guide. We tested six common commercial beans using a HARIO CPS-2TB, with 15g per 12oz cup, to find out how roast level shapes flavor in immersion brewing.

The standout: Colombian (medium roast) won for its bright acidity and aroma with low bitterness. The biggest surprise? Dark-roast Java delivered an intense, pure bitterness with zero acidity—its impact lingered for days.

What We Tested

We used a HARIO CPS-2TB French press, brewing 12oz cups with 15g of coffee each. Six beans were selected based on availability—not rarity. These included Colombia, Brazil, Costa Rica, Mandheling (Indonesia), Carbon Roast, and Java (both Indonesia), all roasted to varying levels and sourced as commercial-grade single origins.

Flavor by Bean & Roast Level

Each coffee revealed distinct characteristics based on origin and roast profile:

• Colombia (Medium Roast): Bright, aromatic, high acidity, low bitterness. A clean, refreshing cup.
• Brazil (Medium Roast): Balanced flavor across the board—no single trait dominated.
• Costa Rica (Medium-Dark Roast): Bold body, high acidity, medium bitterness. More intense than Colombia or Brazil.
• Mandheling (Medium-Dark Roast): Heavier mouthfeel, strong aroma, medium acidity, pronounced bitterness.
• Carbon Roast (Dark Roast): Very bitter with slight charred notes. No acidity detected.
• Java (Dark Roast): Described as an 'absolute', pure bitterness—no other flavors interfered. The darkest and most austere cup of the group. Its bitterness lasted in memory for two days post-brew.

Which One Tasted Best?

Personally, Colombian (medium roast) was the favorite: acidic, fragrant, with a touch of bitterness and great aftertaste. Brazil was smoother with less acidity, while Costa Rica leaned more acidic. For those who prefer heavy, dark roasts, Java delivered unmatched intensity—but it’s an acquired, lingering bitterness.

Why Roast Level Matters in French Press

The immersion style of French press amplifies roast-driven traits. Lighter roasts like Colombia showed more acidity and aroma. Medium-dark and dark roasts (Mandheling, Carbon, Java) emphasized body, bitterness, and roasted notes. The lack of filtration also means more oils and fine particles remain, which enhances texture but also magnifies roast character—especially in dark roasts.

Frequently Asked Questions

What French press was used in this coffee tasting?

The HARIO CPS-2TB was used to brew all six coffees. This model is widely available and produces a clean, full-immersion cup. Each brew used 15g of coffee per 12oz serving.

Which coffee bean tasted best in French press?

Colombian (medium roast) was the favorite overall—offering a balanced cup with aroma, brightness, and mild bitterness. It had the most appealing flavor profile for general drinking.

Did any coffee bean taste extremely bitter?

Yes—Java (dark roast) stood out for its 'absolute' bitterness. Unlike Carbon Roast, which had some charred flavor, Java delivered a pure, deep bitterness without other taste elements. Its aftertaste lingered noticeably for days.

Does roast level affect French press flavor a lot?

Yes. Light to medium roasts (like Colombia and Brazil) show more acidity and origin character. Medium-dark to dark roasts (Mandheling, Carbon, Java) produce heavier body, more bitterness, and prominent roast flavors due to extended Maillard reactions and immersion extraction.

Should I add sugar to dark roast Java?

The testing notes suggest many drinkers do. The Java’s bitterness was so intense and pure that testers recommended adding sugar to balance it—or avoid it unless you enjoy extreme roast bitterness.

Recommended FrontStreet Coffee Beans for French Press

Try FrontStreet Coffee’s Ethiopia Yirgacheffe for bright floral and citrus notes, ideal for lighter French press brewing. Their Colombia Huila offers a balanced medium roast with chocolate and berry tones, performing well in immersion methods. For darker profiles, the FrontStreet Classic Blend brings nutty and caramel notes with smooth body—great for those who prefer a richer French press cup. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.