Add the water and oats to a blender, blend about 30 seconds. (I blended just over 30 seconds on 5 in the Vitamix.)
Strain with a sieve, cheesecloth, or nut milk bag into a jar with a lid.
Add the maple syrup, vanilla extract and salt. Shake. Keep cool in the fridge for up to 3 days. Shake well before pouring into tea or coffee or over cereal.
Tips for making oat milk at home:Use a good blender. Blend the oats with cool, filtered water.Blend for 30 seconds – not much longer to prevent the milk from becoming goopy from the natural fiber in the oats.