Rum must be produced from sugar cane and does not have specific production methods. Styles are based on locations and producers. Production laws vary and are defined by the nation that produces. Rum is produced in a variety of styles from around the world. The majority being produced in the Caribbean islands, Central and South America.
As rum ages, it takes on stronger and richer flavors not unlike caramelized sugar. Spiced rum flavors will vary according to brand, but many have various fruit flavors with a hint of vanilla.