Whisk together all the ingredients for the sauce and set aside. Clean the shrimps and chopped them by using a Chinese chopping knife or blend them using a food processor until they're smooth and marinate with garlic powder, pepper powder, dried oregano and salt.
Place a plastic wrap on the counter top and rub with a little water. Wet your hands and start making the shrimp cake to the shape as you desire. Fry them until golden and transfer onto a serving plate with some slices of cabbage as a garnish. Serve with ginger sauce.