Step 1 - Make the Blueberry Chia Layer
Add the mashed blueberries, non-dairy milk, maple syrup, vanilla, and sea salt to a small blender or food processor. Blend until smooth and vibrantly purple. Pour the blended mixture into a bowl and add the chia seeds. Stir well to combine make sure no chia seeds clump together at this stage or they'll set in clumps rather than distributing evenly through the pudding.
Let the mixture sit for 5 minutes, then stir again. This second stir is important it breaks up any chia seed clusters that started to form as the seeds began absorbing liquid.
Divide the blueberry chia mixture evenly between your two jars, filling each about halfway. Smooth the top of each layer with the back of a spoon.
Step 2 - Make the Lemon Cream Layer
Drain and rinse your soaked cashews. Add them to your high-speed blender along with the non-dairy milk, maple syrup, lemon juice, lemon zest, turmeric (if using), vanilla extract, and salt.
Blend on high for at least 60–90 seconds until the cream is completely smooth and silky. Stop and scrape down the sides if needed. Taste the cream at this point adjust maple syrup for sweetness or lemon juice for tartness based on your preference. The flavor should be bright, creamy, and distinctly lemony.
Step 3 - Layer and Set
Spoon the lemon cream layer gently over the blueberry chia layer in each jar. Pour slowly and use the back of a spoon to guide it so the lemon cream sits on top of the blueberry layer cleanly rather than sinking through.