Brewing Specialty Coffee at Home

Great Coffee Deserves Great Brewing

We spend years growing, processing, and cupping our coffee on the farms in Caicedonia, Valle del Cauca. When that coffee reaches your kitchen, the last mile of quality depends on you. The good news: brewing specialty coffee well is simpler than most people think.

I say this as someone who spends most of his time on the farm side -- growing, processing, cupping. But I have also learned that if the person at the other end does not brew it well, all that work was for nothing. So here is what actually matters.

The Three Variables That Matter Most

1. Water Quality

Coffee is 98% water. If your water tastes bad, your coffee will too.

• Total Dissolved Solids (TDS) -- aim for 75-150 ppm. Pure distilled water (0 ppm) produces flat, lifeless coffee. Hard tap water (300+ ppm) masks delicate flavors.
• Chlorine and chloramine -- use a simple carbon filter (like a Brita) to remove these. They create harsh, chemical off-notes.
• Temperature -- 92-96 degrees Celsius (197-205F). Too hot and you extract bitter compounds. Too cool and you under-extract, producing sour, thin coffee.

A simple carbon-filtered tap water at the right temperature will get you 80% of the way to a great cup.

2. Grind Size

Grind size controls extraction speed. The finer the grind, the more surface area is exposed to water, and the faster flavor compounds dissolve.

| Method | Grind Size | Resembles |

|--------|-----------|-----------|

| French Press | Coarse | Sea salt |

| Pour Over | Medium-fine | Table salt |

| AeroPress | Fine to medium | Fine sand to table salt |

| Espresso | Very fine | Powdered sugar |

Critical tip: Invest in a burr grinder rather than a blade grinder. Blade grinders produce uneven particle sizes -- some powder, some boulders -- which means some coffee is over-extracted (bitter) and some is under-extracted (sour) in the same cup. A decent hand burr grinder costs less than a bag of specialty coffee per month.

3. Ratio

The standard starting point is 1:16 -- one gram of coffee for every 16 grams of water. For a single cup:

• 15g coffee : 240g water (about 8oz)

Adjust to taste. Prefer it stronger? Try 1:14. Lighter and more tea-like? Try 1:17.

A Simple Pour-Over Recipe

This method works with any cone-shaped dripper (V60, Kalita, Melitta):

1. Heat water to 93C (200F)

2. Grind 15g of coffee to medium-fine (table salt consistency)

3. Rinse the paper filter with hot water to remove paper taste and preheat the dripper

4. Add coffee to the filter, level the bed

5. Bloom -- pour 30g of water over the grounds, wait 30-45 seconds. You will see the coffee swell and release CO2 (especially if freshly roasted). This ensures even extraction.

6. Pour slowly in concentric circles, adding water in 50g increments until you reach 240g total

7. Total brew time should be 2:30-3:30 minutes

8. Taste -- adjust grind finer if it tastes sour/thin, coarser if it tastes bitter/harsh

When I brew our Bourbon lots at home, I tend to go slightly finer and hotter than usual -- around 94 degrees -- because the natural sweetness of Bourbon benefits from a bit more extraction. With a Geisha, I back off to 92 degrees and a coarser grind to preserve the delicate floral notes. It is the same principle as cupping: you are adjusting variables to let the coffee express itself.

Freshness Matters

Roasted coffee is at its best 7-30 days after roasting. After that, oxidation degrades the volatile aromatic compounds that create complexity. Buy whole beans, grind just before brewing, and store in an opaque, airtight container at room temperature.

Green (unroasted) coffee, by contrast, stays stable for months -- which is why our dry mill inventory can wait for the right buyer without losing quality. Understanding this distinction is part of understanding the supply chain behind your cup.

The Real Secret

The best brewing advice I can give: taste with attention. Do not just drink coffee while scrolling your phone. Take a sip, let it coat your tongue, and notice what you perceive. Specialty coffee is designed to reward your attention. The farmer who grew it, the picker who selected each cherry, the person who turned the drying beds -- they all paid attention. The least you can do is pay attention when you drink it.

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This post is part of our Seed to Cup series. Want personalized brewing tips and access to our freshly roasted lots? Join the free community at skool.com/particular-3064 where I share recipes, tasting notes, and brewing experiments every week.