Drain and rinse almond. Place the milk ingredients in a high speed blender and blend until smooth. Note, unfortunately for this recipe you truly need a high speed blender such as a Vitamix, a regular blender usually won't blend it smooth enough.
Pour blended milk into a nut milk bag over a bowl (in batches if necessary). Squeeze the bag from top to bottom letting the milk fall into the bowl and the pulp remain in the bag.
To make the chocolate or matcha milk add ⅓ (or adjust portions accordingly) back into the blender with remaining ingredients. Blend until smooth.
Store in a jar for up to a week!
Recipe by Plentyfull Vegan at https://www.plentyfullvegan.com/homemade-almond-oat-milk-3-ways/