Never used a recipe for burger patties, but for my daughters, here is a guide for ours : blend one onion and a slice of bread or breadcrumbs (red onion is best) on speed 7 for a few seconds until finely chopped, add a tray of mince (450-500g),an egg, some tomato paste, Worcester sauce, salt and pepper. Blend on reverse speed 3 for a few seconds until combined. Test the taste by frying a tsp size patty. Shape into burger patties and pan fry a few minutes each side.
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