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Low Acidity & Summer Refreshment

Cold Brew Immersion Guide (18-Hour Steep)

By replacing heat with time, cold immersion gently dissolves soluble sugars and aromatic lipids without extracting astringent tannins or chlorogenic acids. The result is a naturally sweet concentrate that stays fresh for up to two weeks in your refrigerator.

Dose & Water
100g Coffee : 800g Water
Ratio 1:8 Concentrate
Water Temperature
Cold / Room Temp
Filtered water
Grind Size
Extra Coarse
Raw sugar crystals
Steep Duration
16 – 18 Hours
Refrigerated or pantry

Simple Step-by-Step Instructions

Step 1 • Combine Grounds & Cold Water

Dose in Mason Jar or French Press

Add 100g of extra-coarse St. Johns Cold Brew Lot into a clean glass pitcher. Pour 800g of cold filtered water directly over the grounds.

Step 2 • Gentle Stirring

Ensure Full Saturation

Stir thoroughly with a spoon to ensure every coffee particle is wetted. Cover with a lid or wrap and let rest undisturbed for 16 to 18 hours at room temperature or inside your refrigerator.

Step 3 • Dual Filtration

Strain Out All Micro-Fines

Pour through a fine stainless mesh strainer to catch large grounds, then run the liquid through a paper coffee filter. This secondary pass removes microscopic sediment, giving your cold brew crystalline clarity.

Step 4 • Dilute & Serve

Serve Over Ice

You now have a potent cold brew concentrate! Dilute 1:1 with cold filtered water, cold whole milk, or oat milk over ice. Sweeten with vanilla syrup if desired.

Try St. Johns Cold Brew Lot →