The Ancient Mariner is bold, spicy, and deeply tropical, built on aged rum with bright lime and grapefruit providing a sharp, bittersweet citrus backbone. Allspice dram brings warm baking-spice richness, while Angostura bitters add dark herbal depth and structure. The result is a complex, stormy tiki cocktail that balances juicy citrus with spice, bitterness, and rum-forward intensity.