Prepare the Cold Brew: Combine 1 cup of coarsely ground coffee with 4 cups of cold, filtered water in a cold brew coffee maker. Stir to ensure all grounds are saturated.

Steep: Cover and refrigerate for 12-24 hours to allow the coffee to steep and absorb all flavors.

Strain: After steeping, strain the coffee using a fine mesh sieve or a coffee filter to remove the grounds, resulting in a smooth coffee concentrate.

Infuse with Nitrogen: Pour the cold brew concentrate into a nitro infuser. Charge the infuser with a nitrogen cartridge according to the manufacturer's instructions. Shake gently to ensure even nitrogen infusion.

Serve: Pour the nitro-infused coffee into a glass, holding the glass at a 45-degree angle and gradually straightening it as you pour to create a frothy, creamy texture.