Rum Cups to Grams

Rum is a distilled spirit made from sugarcane byproducts such as molasses or fresh sugarcane juice. Produced across the Caribbean, Latin America, Asia, and worldwide, it ranges from light and clean styles to deeply aged, high-ester, and richly aromatic expressions.

Practical use: Rum is used as a base spirit across a wide range of mixed drinks, from light, citrus-forward builds to richer, spirit-forward serves and tropical-style compositions. It also appears in culinary applications such as desserts, syrups, and sauces, where its caramelized sugarcane notes and oak-driven aromatics can add warmth and depth.

Composition and sensory context: Rum’s profile depends strongly on raw material, fermentation, distillation, and aging. Molasses-based rums often show caramel, toffee, vanilla, and baking-spice notes, while cane-juice styles can lean grassy, floral, and fresh. Light styles are clean and gently sweet in perception, whereas aged and high-ester styles can become richly aromatic with tropical fruit, molasses depth, and long warming finishes. Most rums are dry as spirits; perceived sweetness often comes from aroma, oak, and residual congeners rather than sugar.

Rum uses 0.953 g/mL in this dataset, which is 4.7% lighter by volume than the 1 g/mL water reference. Evidence status: medium-confidence. Source basis: Approx density for ~40% ABV ethanol-water at room temp (used across base spirits).

Among the 15 reviewed records labeled Spirits, the nearest density to Rum is Añejo Rum at 0.953 g/mL: an absolute difference of 0 g/mL (0.0% relative to Rum). The observed range in this labeled group is Añejo Rum at 0.953 g/mL to Whiskey at 0.953 g/mL. This is a numerical comparison, not a claim that the liquids are interchangeable.

Brand formulation, alcohol or sugar concentration, carbonation, and serving temperature can change the weight of a measured volume. Use this value as a documented reference rather than a producer specification.