1.Rub walnuts in a clean tea towel to remove most of the skins. Combine walnuts, almonds and the water in a medium bowl; cover, stand overnight.
2.Blend nut mixture for 2 minutes or until as smooth as possible. Drain the mixture through a muslin or tea-towel lined sieve over a medium jug, twist and press the cloth to extract as much nut milk as possible. Discard remaining solids.
3.Blend nut milk, cherries and syrup until smooth. Divide into 1-cup glasses, top with crushed ice, extra walnuts and chia seeds and fresh cherries, if desired. Serve immediately.
You need to start the recipe the day before. For a thicker smoothie, blend the chia seeds with the other smoothie ingredients. You can make other flavoured nut milks using 105g total of your favourite nuts and seeds and 1¾ cups water.Note