Add the ingredients to a medium bowl and stir well.
(Or, add to a blender and blend very smooth. I leave the blender running for abouu a minute. This is a better option if you want a creamy, pudding-like texture.)
Cover and refrigerate, or divide into smaller containers, cover, and refrigerate for at least four hours or overnight. The mixture will firm up into a pudding-like texture as the chia seeds absorb the liquid and plump up.
Serve cold with berries, if desired.
Notes
Store in an airtight container for up to a week in the fridge. This is best served cold.
Use ground chia seeds for a smoother final consistency. Note that they are sometimes more bitter tasting.
Use nondairy yogurt as needed.
To make this with regular milk instead of coconut milk, I would reduce the volume to 1 cup to ensure the final mixture is thick enough.
Have for breakfast or snack as you like.
Top with whipped cream if desired.
Serve with strawberries or other fruit on top if desired.