Put the walnuts in a glass and cover them with water. Make sure that all the walnuts are submerged. Soak the walnuts in water for 24 hours.

After 24 hours rinse the walnuts and put them in a blneder. Add 1 liter of lukewarm water and sweetener (I usually skip the sweeteners, because the milk is very delicious in its own). Blend the mixture for 2-3 minutes.

Turn off the blender and strain the mixture through a dense strainer or cheese cloth. Make sure to preserve the residue that is left in the cloth or strainer. You can freeze it an use it in any recipe that calls for walnuts.