Blend the almond milk, dates, vanilla, cinnamon, and turmeric together in a powerful blender till smooth. Pour the mixture over the chia seeds. Stir the mixture with a whisk and leave it out. Stir it again five minutes later, and again five minutes after that, to help prevent the chia seeds from clumping. Transfer the mixture to an airtight container and place it in the fridge. Allow it to thicken up for at least two hours, and preferably overnight. Add an extra splash of almond milk if it becomes too thick (every chia seed brand will vary slightly in terms of how much liquid they absorb).