Although few things rhyme with it, orange is popular among gin distillers. The orange most commonly used is not the one you would usually bite into, nor make juice out of. It’s in fact the bitter orange, which is renowned for its oil-rich rind and powerful citrus aroma. Though for many distillers who simply state “orange,” we don’t always know who might be using which varieties. The bitter orange frequently used in gin sometimes goes by “bitter orange” or “Seville Orange.”
Rarely, distillers use sweet oranges as well. However, their rinds have fewer oils and therefore don’t impart as much orange flavor .