I make this myself all the time. It is a lot easier than you would think, and cheaper than buying it already prepared in the stores.
1 cup organic RAW almonds, soaked overnight in filtered water.
Rinse almonds, put in high speed blender with 3 cups filtered water
and blend thoroughly. Add 1 packet of stevia or 1 tsp vanilla if desired.
Pour mixture in cloth bag and squeeze milk into clean container (glass is best).
Will keep several days refrigerated, Mine never lasts that long.
Use leftover pulp for making crackers, pie crusts or bread. Pulp will freeze well until ready to use.