In a medium mixing bowl, whisk together the milk, maple syrup, vanilla extract, and sea salt until well combined. This creates the liquid base that will properly hydrate the chia seeds.
Add chia seeds to the liquid mixture and whisk vigorously for 30 seconds to prevent clumping. The key is to stir immediately and thoroughly to separate each seed.
Let the mixture sit for 2 minutes, then whisk again for 15 seconds to break up any clusters that may have formed. This second mixing is crucial for smooth texture.
Cover the bowl and refrigerate for at least 4 hours or overnight. For best results, stir once more after the first hour of chilling to ensure even gel formation.
Before serving, give the pudding a final stir to achieve uniform consistency. If too thick, thin with additional milk 1 tablespoon at a time until desired consistency is reached.
Divide between serving jars or bowls. Add desired toppings such as fresh fruit, nut butter swirls, granola, or a sprinkle of cocoa powder for variety.