Whisk the base: In a mixing bowl or large jar, combine the milk, yogurt, lemon zest, lemon juice, sweetener, vanilla, and salt. Whisk until smooth and evenly combined.

Taste and adjust: Check the balance. If you want more brightness, add another teaspoon of lemon juice. For more sweetness, add a bit more sweetener. Aim for a pleasant tang without sharpness.

Add chia seeds: Sprinkle the chia seeds over the liquid and whisk well for 30 to 45 seconds to prevent clumping. If using coconut cream or poppy seeds, whisk those in now.

Rest and whisk again: Let the mixture sit for 10 minutes, then whisk again. This second stir breaks up any seeds settling at the bottom and ensures a smooth, even texture.

Chill: Cover and refrigerate for at least 2 hours, ideally 4 hours or overnight. The chia seeds will swell and thicken the mixture into a creamy pudding.

Finish and serve: Stir once more before serving. If it’s too thick, loosen with a splash of milk. If it’s too thin, stir in another teaspoon of chia seeds and chill 15 to 20 more minutes.

Top it off: Add berries, a grating of fresh zest, a drizzle of honey or maple, and some crunch like pistachios or toasted coconut.