Combine Ingredients: In a jar or container, combine the kefir, chia seeds, sweetener (if using), and vanilla extract (if using).
Mix Well: Stir everything together thoroughly to ensure the chia seeds are evenly distributed.
Refrigerate: Cover the jar or container and refrigerate for at least 2 hours, or preferably overnight.
Check and Stir: After a couple of hours, give the pudding a good stir. If it seems too thick, add a splash of kefir or milk to reach your desired consistency. If it’s too thin, add a little more chia seeds and let it sit for another 30 minutes.
Add Toppings: When you’re ready to eat, top with your favorite fruits, nuts, seeds, granola, or a drizzle of honey.