What does grind size matter?

Ever wonder why I ask how you will brew your coffee or why your coffee tastes amazing one day and flat the next—even with the same beans? The secret might be your grind size.

Grind size controls how quickly water extracts flavor from coffee. If it doesn’t match your brewing method, you’ll end up with coffee that’s either bitter (over-extracted) or sour (under-extracted).

Here’s a simple guide:

☕ Coarse grind (like sea salt)

Best for French press and cold brew. Longer brew times need bigger particles to avoid over-extraction.

☕ Medium-coarse grind (like rough sand)

Ideal for pour-over methods like Chemex. The slightly larger grind slows extraction just enough for a clean, balanced cup.

☕ Medium grind (like sand)

Great for standard drip coffee makers and some pour-over devices like Hario V60 (depending on technique).

☕ Fine grind (like sugar)

Used for espresso. Fast, pressurized brewing needs smaller particles to extract flavor quickly.

☕ Extra fine grind (like powder)

Perfect for Turkish coffee, where grounds remain in the cup.

👉 Pro tip for pour-over lovers:

If your brew tastes sour, go a bit finer. If it’s bitter, go a bit coarser. Small tweaks make a big difference.

Dialing in your grind size is one of the easiest ways to level up your coffee game ☕