Soak green lentils overnight. Cook the green lentils for about 15 minutes in salted water that is sufficiently boiling. After 5 minutes of cooking time, add red lentils and cook along. Drain the lentils and rinse with cold water.
In the meantime peel and finely dice the onion. Finely dice half of the breakfast bacon. Drain the lentils. Leave the bacon in a pot until crispy. Add onion and lentils and sauté briefly. Remove from heat and let cool down a little.
Meanwhile, wash the thyme, dab dry and pluck the leaves from the stalks. Mix vinegar, mustard, 1 teaspoon salt and 1 pinch of sugar. Fold in the oil. Clean and wash the salad, dab dry and pluck into bite-sized pieces.
Wash apples, grate dry, quarter, core and cut into slices. Sprinkle with lemon juice. Leave the remaining breakfast bacon in a pan without fat until crispy. Remove and break into bite-sized pieces.
Mix all ingredients. Add thyme and fold in. Grey bread tastes good with it.