Wash the thyme, dab dry and pluck the leaves from the stalk. Peel onion and cut into fine cubes. Mix with vinegar, 4 tablespoons of water, salt, pepper, thyme and sugar. Fold in the oil.
Clean, wash and cut the peppers into strips. Wash, clean and halve cherry tomatoes. Loosen 8 nice lettuce leaves, wash and dab dry. Marinate tomatoes, peppers and sprouts with vinaigrette.
Halve the avocado, remove the core and peel the flesh. Cut into strips and fold into the salad. Arrange the salad in portions on 2 lettuce leaves each. Garnish with thyme. Baguette tastes good with it.