For something creamy, whisk three tablespoons of chia seeds with one cup of milk, one and a half tablespoons of cocoa powder, one to two tablespoons of maple syrup and a drop of vanilla. Leave it for ten minutes, whisk again to break up any clumps, then refrigerate for at least two hours, or overnight, until thick and pudding-like. Serve in small glasses topped with banana slices and crushed nuts. It tastes rich and indulgent, but it’s full of fibre, and it can be made ahead.