Add 500 ml of cold water to a jar and pour in the coffee grounds and the ground cardamom. Give the mixture a good stir and let sit for 5 minutes. Then give the mixture another stir and close the lid . Place the jar in the fridge and let it rest for a minimum of 12 hours.
Filter the cold brew coffee through a pour-over coffee maker or using a French press. Transfer the cardamom cold brew coffee to a bottle and keep in the fridge for up to a week.
Cold brew iced latte
Add 2 tbsp vanilla syrup to a glass. Fill the glass with ice cubes.
Add 3 parts oat milk; hake vigorously before adding to the glass to get some top foam.
Top with 1 part cardamom cold brew coffee. Serve with a stirrer to mix in the vanilla syrup.
Notes
If using whole coffee beans, make sure to grind them coarsely, as if to be used in a French press rather than in a pour-over or aeropress.Crushed cardamom seeds are to be preferred, but if you cannot find cardamom pods, you can use 1/3 tsp ground cardamom.