Mash leftover steamed or other cooked rice well. Warm it either in the cooker or microwave for ease before mashing. Add all other ingredients, except breadcrumbs, oil. Heat oil in a frying pan, while shaping croquettes from mixture. Roll each croquette in breadcrumbs, let into hot oil. Deep fry few at a time, till golden and crisp. Serve hot with ketchup, chutney, etc.