Using a fine grater, grate the skin of the oranges making sure that no pith is included to avoid sourness.
Coarsely ground your favorite coffee beans. In your favorite cold brewer, lightly soak the coffee filter, and then begin the layering process; add half of the ground coffee beans, followed by half the amount of water, and repeat.
Add grated orange peel and stir the mixture to ensure even saturation. Steep for 12-24 hours for a smooth and intense coffee flavor.
750 g Ground Coffee Beans
6 L Water