Extracting essential oil from citrus peels requires at least ten hectares of produce to make it profitable. The first step is to process the pulp while keeping the skin, which lends itself well to producing orange juice.
柑橘提煉精油的基本經濟規模是 10 甲地，必須先消化掉果肉、再保留果皮，而柳丁汁便是最佳出路。