Peel the kohlrabi and cut into thin sticks. Cut the onion and garlic into cubes and sauté in the oil until translucent. Add the kohlrabi and fry for 2 minutes. Season with vegetable stock, salt, pepper and chilli to taste. Pour in the water and coconut milk and simmer everything over a mild heat for about 20 minutes until the kohlrabi is done and the sauce is nice and creamy.
Meanwhile, cook the spaghetti in salted water according to the instructions on the packet. Now season the vegetables again and serve with the spaghetti.
Kohlrabi and coconut milk harmonize surprisingly well and complement each other perfectly in taste.