Alnwick Rum Miniatures Alnwick Rum was first produced back in the early 1900 to appeal to seafaring Northumbrians, which kept with the rich heritage of rum as a maritime tipple. This dark rum was enjoyed for generations around the world until the loss of its old blending formula nearly 30 years ago. With the recent rediscovery of the recipe which involves the skillful marrying of mature rums in a complex process. This process results in a distinctive, full round character with a real unique depth of flavour.