Make chia seed pudding: In a large jar, stir together the juice of your choice, chia seeds, and maple syrup. Let sit in the fridge overnight. Optional: To more evenly distribute chia seeds, stir once about an hour into the process.
The next day, stir the pudding to break up any chunks and make sure it is evenly combined. Add more maple syrup if needed. Layer chia seed pudding with Greek yogurt in a jar or glass. Garnish with mint and enjoy.
Chia seed pudding mixture will keep in the fridge for 2-3 days.