Place all ingredients in a container with a well-fitting lid.Shake vigorously until all ingredients are combined.You may need to stir the mixture with a spoon to ensure the chia seeds aren't clumped together or stuck to the bottom of the container.Refrigerate for at least 2 hours or overnight.The soaked pudding will last in the refrigerator in a covered container for up to five days.Bulk preparation: This recipe can be multiplied numerous times to make larger batches.