Briefly fry the beef cubes in oil so that they are still slightly pink on the inside. Take out of the pan. Cut the onions into rings, sauté 1 onion in the frying fat (add the other raw to the salad), also the pressed garlic, then fry the diced paprika in the pan for 5 minutes. Dice the cucumber, mix all the ingredients in a bowl, prepare a sauce from the remaining ingredients, mix everything and season well.