Cold Brew Cheat Sheet — Ratios, Steep Times & Flavour Tips

Cold brew is smoother, less acidic, and naturally sweeter than hot coffee — and it’s surprisingly easy to make at home. Master these ratios and steep times and you’ll never go back to iced hot coffee again.

The Basic Cold Brew Ratio

Strength Coffee Cold Water Result
Regular Brew 1 cup (85g) 4 cups (1L) Ready to drink
Concentrate 1 cup (85g) 2 cups (500ml) Dilute 1:1 with water or milk
Strong Concentrate 1 cup (85g) 1 cup (250ml) Dilute 1:2 or use in recipes

Tip: Start with concentrate — it’s more versatile and lasts longer in the fridge.

Steep Times

Method Time Notes
Room temperature 12–14 hours Faster, slightly more acidic
Refrigerator 18–24 hours Smoother, preferred method
Quick cold brew 4–6 hours Use finer grind; less smooth

Grind Size Matters

  • Coarse grind (like sea salt) — best for cold brew. Produces a clean, smooth cup with less bitterness.
  • Medium grind — works but may produce a slightly more bitter result. Reduce steep time by 2–3 hours.
  • Fine grind — not recommended. Over-extracts quickly and produces a muddy, bitter brew.

Flavour Variations

Flavour What to Add When
Vanilla Cold Brew 1 tsp vanilla extract After straining
Cinnamon Cold Brew 2 cinnamon sticks During steeping
Chocolate Cold Brew 2 tbsp cacao nibs During steeping
Salted Caramel Caramel syrup + pinch of salt When serving
Coconut Cold Brew Replace half water with coconut water During steeping

Serving Ideas

  • Classic iced cold brew: Concentrate + water over ice (1:1)
  • Cold brew latte: Concentrate + oat milk or whole milk over ice (1:1)
  • Cold brew tonic: Concentrate + tonic water over ice — surprisingly refreshing
  • Cold brew smoothie: Blend concentrate with banana, almond milk, and a scoop of protein powder
  • Coffee ice cubes: Freeze leftover cold brew in an ice cube tray — use in lattes so they don’t dilute your drink

Storage

  • Store strained cold brew in a sealed jar or bottle in the fridge.
  • Regular brew: Keeps for up to 7 days.
  • Concentrate: Keeps for up to 2 weeks.
  • Never leave cold brew at room temperature after steeping — refrigerate immediately after straining.

Download the Free Cold Brew Cheat Sheet

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