Place all ingredients, except chia seeds, in a large mason jar and shake vigorously to combine. Add chia seeds and shake again.
Let sit for 10 minutes, then shake again. Place in refrigerator for 30 minutes or overnight to thicken.
Divide into 3 servings, and serve plain, or enjoy with optional toppings.
Notes
Low-FODMAP Option: Swap the Siggi's coconut Skyr yogurt for plain, unsweetened lactose-free yogurt. Use low-FODMAP milk. Add additional sweetener if desired and unsweetened coconut