Paleo Blueberry Smoothie (vegan, grain-free, gluten-free)

milk of choice (I've tried with almond, coconut and dairy milk)

blueberries, fresh or frozen

medium cold or frozen and partially thawed ripe bananas (each was 130 grams without the peel)

lemon juice (plus more, to taste)

lemon zest

vanilla extract

maple syrup, optional (you won't need this if your bananas are ripe and blueberries are sweet)1

for a grain-containing / non-paleo version: 1/2 cup (45 grams) rolled or quick oats to create a thicker more filling version2 (use gluten-free oats, if necessary)