Combine all ingredients in a jar that has a well-fitted lid (16-ounce volume or greater will work best).
Seal the jar and vigorously shake for about 1 minute to agitate the pudding and make sure all the chia seeds are suspended in the liquid.
Place the sealed jar into the fridge for at least 1 hour, or overnight. Highly recommended: Shake the sealed jar every 20 minutes for that first hour to ensure you don’t get any clumps. If you don't shake the pudding, the chia seeds float to the top and will get clumpy!
Serve with additional sweetener (if desired), fresh fruit, shaved chocolate, coconut, or any of your favorite toppings.