Peel and wash the potatoes. Cover and cook in salted water for about 20 minutes
Clean and wash the chicory and cut in half lengthwise. Peel onion and cut into rings. Rinse liver, pat dry and cut into strips
Heat 1/2 tsp. oil in a coated pan. Fry the liver for 2-3 minutes while turning it over. Add onion and fry briefly. Season everything with salt and pepper. Take out and keep warm
Heat 1/2 tsp. oil in hot frying fat. Fry the chicory in it. Deglaze with lemon juice and about 150 ml water, bring to the boil. Season with stock and rosemary. Cover and stew for about 5 minutes. Drain the potatoes. Arrange everything and garnish if necessary
100 g liver contains only 4 g fat, but 360 (!) mg cholesterol. So if you also want to eat low cholesterol, you should replace it with 100 g beef steak