Oleo saccharum is a classic bar-prep ingredient made by extracting aromatic citrus oils from peels with sugar. The result is intensely fragrant, bright, and rounded, with a depth that citrus juice alone cannot deliver. It is one of the most effective ways to add “citrus peel aroma” to cocktails, punches, and even zero-proof drinks, while also reducing waste by using peels that would otherwise be discarded.