Lightly oil the Seitan Medaillons, place in the aluminium foil and grill well on both sides. Peel and halve the onions and also grill in the foil / pan. Serve the medaillons together with the grill sauces and the onions.
Halve the avocado, deseed and cut out the pulp and dazzle with some lemon juice. Halve the red and green pepper pods and deseed and cut into slices. Peel the garlic and chop up, grate the lemon peel and puree together with the oat milk and season with salt and pepper.
Mix all the ingredients in a bowl, chop up the chives into small rolls and fold in. Season with salt, pepper and a pinch of sugar.