Wash lemon hot, grate dry and peel in zests. Halve the lemon and squeeze 1 half. Wash the herbs, dab dry and pluck the leaves from the stalks. Wash fish and dab dry.
Heat oil and 1 tablespoon of butter in a frying pan. Fry the fish for 4-6 minutes on each side depending on the thickness. When turning, add herbs to the pan, sprinkle fish with lemon zests, finish frying and season with salt and pepper.
Wash and drain the spinach. Peel and slice the garlic and onions. Wash the tomatoes, dab dry and cut in half. Heat 1 tablespoon of butter in a large pan. Add garlic, onions, 2 tablespoons lemon juice and stock.
Steam the spinach and tomatoes for 2-3 minutes, turning until the spinach has completely collapsed. Season to taste with salt, pepper, nutmeg and sugar. Arrange salmon and spinach vegetables. Serve with baguette bread.