Best Coffee Beans for Cold Brew: Roast, Origin and Grind Explained

Cold brew is smooth, rich and easy to make at home. But here's the thing most people don't realize: not every coffee bean makes great cold brew. The beans you pick matter just as much as the recipe.

In this guide, we'll break down the best coffee beans for cold brew, including the right roast level, the best origins and the correct grind size. Then we'll share an easy cold brew ratio chart and a simple step-by-step recipe you can make tonight.

What Makes a Coffee Bean Good for Cold Brew?

Cold brew is made by steeping coarse coffee grounds in cold or room-temperature water for many hours. Because the water is cold, it pulls flavor out slowly and gently. It extracts plenty of the deep, chocolatey, sweet flavors but fewer of the bright, sharp, acidic ones. That's why cold brew usually tastes smoother and less acidic than hot coffee.

This tells you exactly what kind of beans to choose. Coffees that already taste like chocolate, nuts and caramel become even better as cold brew. Very bright, fruity or floral coffees still work, but some of their sparkle gets muted in the cold.

Best Roast Level for Cold Brew: Medium to Dark

Most cold brew fans land on a medium or dark roast. Medium gives you sweetness and balance. Dark gives you body and boldness that stands up to milk, oat milk or ice. Still deciding? Our light vs medium vs dark roast guide explains the differences.

Best Coffee Origins for Cold Brew

Where a coffee is grown shapes its flavor, and some origins are simply made for cold brew:

• Sumatra (Indonesia): heavy body, earthy depth and very low acidity. A classic cold brew coffee. Learn why Sumatran coffee is so low in acid.
• Guatemala (Central America): chocolate, nuts and brown sugar sweetness, which makes a naturally sweet cold brew.
• House blends: blends are built for balance, so they make a smooth, crowd-pleasing cold brew.
• Ethiopia (Africa): bright and floral. It makes a lighter, tea-like cold brew for something different.

Want to explore more origins? Browse our single origin coffee beans collection.

Fresh, Whole Bean and Organic

Freshness matters even in cold coffee. Stale beans make flat, papery cold brew. Buy whole bean coffee that was roasted recently, grind it right before you brew and store the rest properly (here's how to store whole bean coffee). Since cold brew uses about twice as much coffee as hot brewing, choosing USDA organic coffee beans is a nice upgrade too.

Best Forum Coffee Beans for Cold Brew (Ranked)

Here's how each Forum organic coffee performs as cold brew, based on its roast level and flavor profile, from boldest to most delicate.

1. Sumatran Takengon: Best for bold, smooth cold brew. Our Sumatran Takengon Dark Roast makes a thick, low-acid cold brew with notes of baker's chocolate, cedar and spice. It's perfect with milk or oat milk.

2. Crooked Column House Blend: Best everyday cold brew. Crooked Column turns walnut, chocolate and cherry into a naturally sweet cold brew that most people enjoy black. Read why Crooked Column is our best seller.

3. Guatemalan Huehuetenango: Best for sweet, chocolatey cold brew. Guatemalan Huehuetenango brings chocolate, cashew and brown sugar. It's a great pick if you don't add sugar.

4. Boppy Decaf: Best decaf cold brew. Boppy Decaf is Swiss Water Process decaf roasted dark, so you can enjoy a glass of cold brew in the evening.

5. Ethiopian Yirgacheffe: Best for a light, fruity cold brew. Ethiopian Yirgacheffe makes a refreshing, tea-like cold brew with honey and lemongrass notes. Try it over ice on a hot day.

How to Make Cold Brew at Home: Grind, Ratio and Steep Time?

Cold Brew Grind Size: Go Coarse

Always use a coarse grind for cold brew, about the size of rough sea salt or breadcrumbs. A fine grind over-extracts during the long steep, which makes cold brew bitter and muddy. It also clogs your filter. If you don't own a grinder, choose the "Coarse" grind option when you order any Forum coffee.

Cold Brew Ratio and Steep Time Chart

For a deeper dive into ratios for every brew method, see our coffee-to-water ratio guide.

Easy Cold Brew Recipe (Step by Step)

1. Grind: Coarsely grind 120 grams of coffee.
2. Combine: Add the grounds to a large jar or pitcher with 32oz (about 950ml) of cold, filtered water.
3. Stir: Stir gently so all the grounds get wet.
4. Steep: Cover and steep for 12 to 16 hours in the fridge or on the counter.
5. Strain: Pour through a fine mesh strainer lined with a paper filter or cheesecloth.
6. Serve: Pour over ice and enjoy black, or add milk.
7. Store: Keep it sealed in the fridge and drink it within about one to two weeks.

Cold Brew Coffee FAQs