1. Fill up tumbler with water 1 to 2 inches from the top.
2: Rinse the filter with water.
3: Fill with ground coffee to the top of the mesh filter.
4: Screw filter on to lid and place into water. Screw cap tight.
5: Place in fridge for 8 -12hrs
6: Remove lid and filter from tumbler.
7: Stir and wait 5mins for the grounds to settle at the bottom.
8: Screw only the lid on and pour over ice.