You can use a cold brew pitcher if you have one, or any container that holds water. A French press or mason jar are excellent choices.
Add coarse coffee grounds directly to the water and stir. Let the mixture sit and steep at room temperature for a day. You’ll need 1g of coffee for every 8g of water.
Once your cold brew has steeped, pour it through a fine mesh strainer lined with a coffee filter. (A cold brew pitcher or French press have built-in filters to strain the grinds.)
Once the cold brew is steeped and strained, all that’s left to do is chill it in the fridge. Serve it in a glass with or without ice, with the sweetener or creamer of choice.