Peel and wash the potatoes and cut them into cubes of approx. 2 x 2 cm. Clean, wash and cut spring onions into rings. Peel and clean kohlrabi and cut into 2 x 2 cm cubes. Peel and slice the carrots. Put the vegetables in a pot with about 1.5 l salt water.
Wash the lemons hot, peel the peel with a peeler. Peel garlic and crush it with a spoon. Clean and wash the chillies and cut them in half lengthwise. Put lemon peel, garlic, chillies and bay leaves in a gauze bag or tea bag, close tightly and add to the vegetables. Cover and simmer for about 15 minutes at medium heat.
Cut bacon into wide strips, place on a baking tray lined with baking paper and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 10 minutes. Put peas in boiling water, blanch for about 5 minutes and drain in a sieve.
Wash parsley, shake dry, pluck leaves from the stalks and chop coarsely. Remove the spice bag from the pot, add oil to the stew, season with salt and pepper. Sprinkle bacon and pea topping over it and garnish with parsley.