In a food processor combine beetroot, carrots, and onion. Process until very fine. Now add the rest of the pattie ingredients and pulse until well combined and smooth. Add 1 tablespoon of water at a time if it is too dense.
Form 5 x 1 cm thick patties.
Head up oil in a pan and fry the patties on both sides until browned. About 5 minutes.
In a small bowl combine the sauce ingredients.
Enjoy the patties with bread as a burger or over salad.