Chop tomato, garlic, and onion.
Boil the spaghetti noodles in boiling water.
In a pan with olive oil, sauté garlic and onion.
Add the chopped tomato to make the sauce.
Add 100ml water and kelp broth for hangover to the sauce.
Mix the cooked noodles into the sauce.
Season with salt and pepper.
Serve in a bowl and sprinkle with parsley.