Quick Answer
Use a stainless steel cold brew filter to steep coarse coffee grounds in cold water for 12–24 hours, then remove the filter for a clean, smooth concentrate.
Why a Stainless Steel Filter Works Best
A stainless steel cold brew filter eliminates the need for paper filters, reducing waste and allowing the natural oils of the coffee to pass through for a fuller flavor. The precision micro-perforations in MiiR's Cold Brew Filter are designed to optimize brew quality while keeping grounds contained.
This method is especially convenient because the filter fits directly into a 32oz wide mouth water bottle, making the entire process—from brewing to storing—happen in one container.
Choosing the Right Coffee Grind
For cold brew, always use a coarse grind—similar to breadcrumbs. A fine grind can clog the micro-perforations and result in a bitter, over-extracted brew. If you don't have a grinder, ask your local roaster to grind for cold brew.
Start with a 1:4 ratio of coffee to water (by weight) for a concentrate, or 1:8 for a ready-to-drink strength.
Step-by-Step Guide
- 1. Add Coffee Grounds to the Filter: Remove the filter from your bottle and add coarse coffee grounds directly into the filter basket. For a 32oz bottle, use about 1 cup (120g) of grounds for a concentrate. Common mistake: using too fine a grind. Stick to coarse to avoid clogging and bitterness.
- 2. Attach the Filter and Add Water: Place the filled filter into the bottle and secure it. Slowly pour cold, filtered water over the grounds until the bottle is full. Gently stir with a long spoon to ensure all grounds are saturated. Checkpoint: make sure the filter handle is folded down and the lid is sealed tightly before moving the bottle.
- 3. Steep at Room Temperature or in the Fridge: Let the bottle sit at room temperature for 12 hours, or in the refrigerator for 18–24 hours. The longer steep in the fridge produces a smoother, less acidic concentrate. Common mistake: steeping longer than 24 hours can lead to over-extraction and bitterness. Set a timer.
- 4. Remove the Filter and Enjoy: After steeping, lift the filter by its fold-down handle and let it drain completely. Discard the used grounds, rinse the filter, and your cold brew concentrate is ready. Serve over ice with water or milk to taste. Checkpoint: rinse the filter immediately after use to prevent coffee oils from clogging the micro-perforations.
Product Highlight
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Stainless Steel Cold Brew Filter: Designed to fit in the 32oz Wide Mouth water bottle with precision micro-perforations for optimal brew quality. You can brew, store, and pour directly from the same bottle, and the micro-perforations keep grounds out of your cup.
Stainless Steel Cold Brew Filter
