Mix the minced meat, tomato sauce, the onion, the seasoning, salt and pepper in a bowl; plus it all and form 4 burgers. Melt in a frying pan 30 g butter and fry the onion rings over medium heat until golden. Keep them warm.
In a frying pan or grill smeared with oil, cold eachlag of the burgers some 3 minutes or until they're done. Add a slice of cheese above.
Meanwhile, cold the eggs and dore the bacon with the rest of the butter.
Cover the buns and cover the bottom half with the lettuce, the tomato, beetroot and pineapple. Add the burger, the onion, the bacon, the egg and top with the bun.
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