Drench the slice of bread in water - put aside.
Grate the tomato & finely chop the parsley - put aside.
Roughly chop the mushrooms and flash fry – put aside.
Fry onions in olive oil until soft – put aside.
Add the cooked mushrooms, onion, bread, spices, herbs, baking powder, chopped tomato and parsley to the raw mince. Add seasoning to taste.
Mix by hand ensuring ingredients are well distributed.
Form the burger patty and refrigerate for 30 minutes.Grill or fry patty.