 Duros may be microwaved, but the best results are obtained when they are deep fried.Ready-to-make duros are often sold in supermarkets, and simply require being fried in oil.They are typically seen served by street vendors in a plastic bag and topped with salsa and chili, lime, salt, mixed in soda water or with hot sauce and lemon juice that is sprayed into the bag, then finished with chili powder.