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.