This drink is easy to make and very cooling, and it takes only a half an hour to make it. The recipe is from the Beverages book (see the Reading page for more info).
This is what you need:
2 l water
1 kg rhubarb
sugar, zest of half a lemon
Let the water come to a boil. Add the chopped rhubarb. Cook for 10 minutes. Strain the juice. Add sugar according to taste. I often use 2 dl. Put the grated lemon zest into the bottles and bottle the drink.