Utkins White Rum will be sold from the end of this month in major multiples including Asda, Sainsbury's and Morrisons, as well as the off-licence chain Booths.
The spirit is 100% organic and will sit next to the firm's organic gin, whisky and vodka products. Priced £11.50, it will compete with conventional rum alternatives such as Havana Club and Bacardi.
The launch of the rum will benefit 800 sugar-cane farmers in Paraguay who will receive a cut of total sales.
Utkins will be exported to Europe, Australia, the US and Hong Kong.