Soda making has gone out of fashion, but the ingredients are still there in Asian supermarkets if you look for them. For this you'll need Helbruboy (Hales Blu Boy). A range of syrups that has been available since my mother was a child!
4 Tablespoons Soya Milk.
3 Tablespoons Green Soda Syrup
2 Tablespoons Lemon
40 ml Soda Water (or Fizzy Mineral Water)
40 gms Crushed Ice
1. Mix all ingredients together except the soda in a cocktail mixer and shake.
2. Pour into the glass and pour the soda in.