*The banana sweetens this drink nicely on its own, but if your banana is under ripe, I recommend using a regular vanilla milk alternative (which is usually lightly sweetened – as opposed to the unsweetened version), adding a few drops of stevia (use a light hand! This stuff can overpower), or sweetening with something that dissolves well in cold liquids. Maple syrup, agave, and finely granulated sugars work well, but honey and larger crystals really need heat to dissolve.