Citrus Hystrix, varietas Cornbava. For obvious reasons the essential oil of the peel of these edible fruits of the tropics is rarely expressed or distilled. Fruits are used as part of everyday food. Combava Petitgrain Oil is a pale yellow to greenish yellow, mobile liquid of fresh leafy, sweet rosy odor, somewhat reminiscent of the odor of Guinea lemon petitgrain oil and eucalyptus citriodora oil.