Combine the oats, water, maple syrup, vanilla, and salt in a blender and blend for 30 seconds.
Place a fine mesh strainer over a large bowl and strain the milk without pushing any excess pulp through the strainer. This will create a creamier texture that's not gritty or gummy.
Add more maple syrup to taste if desired. Chill overnight. If you want to drink your oat milk right away, I recommend adding ice – it's flavor is best when well chilled.
Optional: you can soak the oats for a creamier, more flavorful oat milk: Find a good digestive enzyme pill that has Amylase in it (this helps prevent sliminess) and add it to the water with the oats, soak for approx. 15 min. Drain & rinse thoroughly then proceed with recipe directions.