Salt, pepper to taste Dash garlic powder Flour Process walnuts in food processor and pour into a bowl. Process rice and pour in with walnuts. Saute onion in oil until tender and add to walnuts and rice along with the rest of ingredients except flour. Add enough flour to make patties. Refrigerate for one hour. Fry in a little oil for several minutes, turning occasionally. Serve on a bun with barbecue sauce and pickles.