Almonds are first soaked in water for few hours and then rinsed well to get the milk. Almond milk is prepared by blending almonds with water and then straining, to remove the solids. The milk appears creamy and one can strain the residue in cheesecloth to get extra liquid.
It can be made from almond butter where you add water to the butter and mix it well.
If you wish to buy milk, it is advised to get the packets that do not contain additional sweetener. Most brands offer such milks enriched with mineral, vitamins, proteins and herbs like cardamom. Plain almond milk is used to prepare mutton or paneer dishes.