Run all the ingredients for the burger patty into a "dough" in a food processor or blender.
Place the dough in the fridge for at least 1 hour.
Preheat the oven to 150 degrees Celsius (302 degrees Fahrenheit).
Heat up a pan with a little oil.
Form the cooled dough into a patty, and fry it for 5-6 minutes on each side.
Warm the burger bun in the oven in the meantime, and serve the burger with your favorite toppings.
Here, red onions, mustard, ketchup, tomato slices, and garden cress have been used instead of regular lettuce.