How to make Cold Brew coffee | Wai Roasters

A cup of cold brew coffee under the sunlight on a wooden table

Introduction

Cold brew coffee is a refreshing and smooth coffee style made by steeping coarsely ground coffee in cold water for an extended period, usually for 12–24 hours. Unlike hot-brewed coffee, it produces a naturally less acidic, mellow, and slightly sweet cup with rich coffee flavors.

Our Guide

We recommend preparing cold brew as a concentrate, allowing it to be diluted to suit individual taste preferences.

Ratio: 1:3

Grind: Coarse

Steep time: 24 - 36 hours

Work Flow

  1. Combine coarsely ground coffee and water at a 1:3 ratio.

  2. Cover and steep in the refrigerator for 24–36 hours.

  3. Filter the concentrate through filter paper for a clean, smooth cup.

  4. Dilute with ice or water to your preferred strength before serving.

 Adjust steep time or dilution to match your desired flavor intensity.

Recommendations

Cold brew coffee works best with medium to dark roasts, using a coarse grind. Steeped slowly in cold water for 12–36 hours, it produces a smooth, mellow, and naturally sweet cup with low acidity. Once made, the concentrate is convenient to store and can be quickly diluted or poured over ice, making it perfect for an easy, ready-to-drink coffee anytime.