How to Make Big-Batch Cold Brew Concentrate
Cold brew is the kind of ritual that rewards patience. It takes time, but when you make a large batch of concentrate, you’ll have days of smooth, bold coffee ready to pour into your Ember Cold Tumbler. Think of it as an investment: a little planning up front for effortless refreshment all week long.
Ingredients
- 250 ml coarsely ground coffee (medium or dark roast espresso)
- 950 ml room-temperature, filtered water
- A large jar or pitcher
- Fine-mesh strainer and cheesecloth
- Ice
Directions
- Add your coffee grounds to the jar. Slowly pour in the room-temperature filtered water, stirring gently to ensure every ground is fully saturated.
- Cover and let sit for 12–18 hours. Steeping at room temperature generally leads to a stronger, fuller-bodied brew, while steeping in the fridge produces a lighter cup by slowing extraction. Both work—but either way, refrigerate after straining to preserve freshness.
- After already waiting overnight, it can be tempting to squeeze or press your cold brew through the filter. Resist the urge. Forcing it through will release bitterness and muddy the flavor. Instead, divide and conquer: strain in two batches, and let gravity do the work. Plan for straining to take about 30 minutes total. The reward is sweet, smooth, obsession-worthy cold brew concentrate.
- Fill your Ember Cold Tumbler with ice. Pour in the concentrate, then dilute to taste: 1:1 (equal parts concentrate + water or milk), balanced classic 1:2 (one part concentrate + two parts liquid), lighter, café-style sip 1:3 (mellow and refreshing, like an iced latte base)
- Finish with milk, alt-milk, or cream—or keep it black for a clean, bold flavor.
Enjoy!
Pro Tips
- Batch wisely: Since cold brew takes time, make more than you think you’ll need—you’ll thank yourself later.
- Shelf life: Stored in the fridge, concentrate stays fresh for about 7–10 days.
- Flavor it: Add cinnamon sticks, cardamom pods, vanilla bean, or orange peel during steeping. For serving, try a drizzle of maple syrup, a splash of oat milk, or even sparkling water for a fizzy twist.
Cold brew is proof that good things take time. Brew big, strain slow, and sip from your Cold Tumbler all week long.
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