Cook meatballs/patties in a skillet, on both sides. When finished, transfer them to a baking tray and place them in the oven on broil for about two minutes on each side. (If you want to grill outdoors: Grill them from about 3 minutes per side until they run clear and hit an internal temp 145° F.)
Place the sliced kohlrabi in the broth. You typically eat them by alternating dipping the meatballs, greens and noodles into the broth. It is very refreshing!