For the frittata, clean and wash the spring onions and cut them into rings. Wash the tomatoes and cut them into slices. Whisk eggs and cream. Season with salt, pepper and nutmeg.
Heat clarified butter in a coated pan (approx. 26 cm Ø). Sauté spring onions briefly in it. Add tomatoes and steam briefly. Season with salt and pepper. Add egg cream and let it simmer on the stove at low heat for about 20 minutes.
Slide carefully onto a large flat lid and turn it over. Bake for another 2-3 minutes at the same heat.
For the cheese mixture, wash the herbs and cut them finely. Crush the sheep's cheese. Mix herbs, lemon rind and cheese. Season with salt and pepper. Sprinkle frittata with the herb-cheese mixture.