Blackline French Press

Brew Recipe · 4 min read

Black Line is a dark post-roast — cocoa, caramel, no acidity. French press is the right method. Full immersion lets the roast open fully without the bitterness that pressure-based methods can pull from a dark coffee. 72 grams. 36 ounces. 3.5 minutes. That's the standard.

The Standard

Coffee: Black Line · 72g
Water: 36oz at 200°F
Grind: Medium-coarse · setting 13.5 on a 1–15 scale
Steep: 3.5 minutes
Method: French press, full immersion

Why Black Line for French Press

Black Line is the anchor — dark post-roast, bold without bitterness, cocoa and caramel notes with no acidity. French press is full immersion, no paper filter, which means the oils from the coffee go directly into the cup. For a lighter roast that's a feature. For a dark roast that's essential — the oils carry the flavor compounds that make Black Line what it is. Strip them out with a paper filter and you lose half the cup.

The 3.5-minute steep — not 4 — is specific to this roast. Dark post-roast extracts faster than medium or medium-light. At 4 minutes you start pulling the bitter compounds that sit underneath the cocoa and caramel. At 3.5 you get the full flavor profile without the edge. The 200°F water temperature is the same as the Zero Logic French press — the difference is in the steep time and the roast doing different work at the same temp.

How to Make It

1. Preheat the press. Pour boiling water into the empty French press. Let it sit 30 seconds. Dump it. A cold press drops the water temperature on contact — preheating keeps the brew at 200°F from the first pour through the full steep.

2. Grind medium-coarse. Set your grinder to 13.5 on a 1–15 scale. Texture should look like coarse sea salt — clearly visible individual pieces, not powder, not fine sand. If you want to see the full grind size spectrum, that's covered. Grind fresh — right before you brew. Black Line is a dark roast and dark roasts go stale faster than lighter roasts once ground.

3. Measure 72g. Use a scale. 72g to 36oz is the exact 2g/oz ratio — no guessing. If you're brewing a smaller batch, 24g to 12oz or 48g to 24oz both hold to the same standard.

4. Heat water to 200°F. Full boil then 45 seconds off heat. That drops you to approximately 200°F. Don't skip the wait — boiling water on a dark roast at full temperature pushes bitterness. 200°F is the ceiling.

5. Bloom. Add grounds to the press. Pour enough water to saturate them — roughly twice the weight of the coffee, so about 140g of water over 72g of grounds. Let it bloom 30 seconds. You'll see the grounds swell and CO₂ release. This opens the grounds for even extraction and is more important with a fresh dark roast than any other.

6. Pour and stir. Add the remaining water to reach 36oz total. One slow stir to make sure all grounds are fully saturated. Lid on, plunger pulled all the way up. Do not press yet.

7. Steep exactly 3.5 minutes. Set a timer. Black Line is a dark post-roast — at 4 minutes you start over-extracting. 3.5 is the standard for this roast at this grind size. Don't extend it to compensate for anything else. If the cup isn't strong enough, the answer is more coffee — not more time.

8. Press slow and pour immediately. Steady even pressure over 20 seconds. If there's serious resistance your grind is too fine. Once pressed, pour the entire batch immediately — coffee sitting on the grounds after pressing keeps extracting. Don't leave it in the press.

Scaling the Recipe

The 36oz batch is built for a full press — enough for two large cups or one cup and a refill. The ratio scales directly:

12oz cup: 24g coffee · 12oz water
24oz batch: 48g coffee · 24oz water
36oz batch: 72g coffee · 36oz water

Steep time stays at 3.5 minutes regardless of batch size. The grind setting stays at 13.5. The only variable that changes is the volume.

Common Problems

Tastes bitter. Steeped too long or grind too fine. Pull at 3.5 minutes — not 4. Dark roast extracts fast. If you're at the right time and still getting bitterness, coarsen the grind one click and try again.

Tastes weak or flat. Grind too coarse or not enough coffee. Check your ratio — 2g per oz. If ratio is right, go one click finer on the grind.

Sludge in the cup. Grind too fine or pressing too fast. Slow the press down — 20 seconds minimum. If sludge persists, coarsen the grind.

Plunger hard to press. Grind too fine. Coarsen one or two clicks. Never force the plunger.