Bring 1.5 liters of water to the boil in a saucepan, add two heaped teaspoons of salt.
When the water boils, add the kohlrabi sticks to the water and cook until firm to the bite for about 10-15 minutes. The kohlrabi should not be cooked too soft, otherwise it will quickly become mushy, but must also not be too firm to the bite.
Drain the kohlrabi.
Put the pot back on the stove, add butter and melt over low heat.
Remove the stems from the kohlrabi green and cut the leaves into fine strips, toss in the butter for a moment, put the kohlrabi back in the pan, toss and serve.