Preheat oven to 250°F. In a food processor fitted with a steel blade, pulse together all ingredients to make a rough dough. Using moistened hands, form mixture into patties about ½ inch thick. Dust patties with corn flour and set aside.
Heat oil in skillet over medium heat. Working in batches, fry the patties until golden brown on each side, about 5-7 minutes per side. Transfer to a baking sheet and put in oven to keep warm.