The technology for making nuts milk at home is about the same. It is important that nuts and seeds are pre-soaked. More useful information can be found on the blog of Desi:
Soaking time of different types of nuts and seeds:
almonds - 12:00
Walnuts - 8:00
hazelnuts - 8:00
Cashew - 2:00
sunflower seeds - 4:00
pumpkin seeds - 4:00
Linseed - 4:00
hemp seed - 0 hours
It is very important after soaking nuts and seeds in water to rinse well!
For preparation of the drink itself you can follow the recipe from here .
Consume immediately after preparation and then refrigerate.