Peel onions and cut them into rings. Pour the beans into a sieve, rinse and drain. Wash the marjoram, shake dry. Pluck the leaves from the stalks and chop them except for something to garnish.
Heat the oil in a casserole dish. Fry the salami in it for 3-4 minutes while turning it until it is crispy. Add the gyros and onion rings to the hot frying fat and fry vigorously while turning. Deglaze with stock, add beans and chopped marjoram, bring to the boil and simmer for 8-10 minutes
Mix the starch with a little water, thicken the simmering soup slightly, simmer again for about 1 minute. Season with salt, pepper and some sugar, arrange in bowls, add salami and garnish with marjoram. Tastes good with brown bread