Citrus fruit
Citrus fruits are berries from plants in the genus Citrus, typically with a segmented interior, juice-filled sacs, and a leathery rind.
Hesperidium: A specialized berry with a leathery rind and a segmented interior containing juice-filled sacs. Citrus fruit is the classic example of this distinctive berry type.
Sweet orange: The widely cultivated orange, Citrus × sinensis, valued for its sweet juice and edible flesh. It is the familiar fresh-eating citrus and a major juice crop.
Citrus taxonomy: The classification of Citrus species and their cultivated relatives, complicated by extensive hybridization. Many familiar fruits have hybrid ancestry, making species boundaries difficult to draw.
Marmalade: A fruit preserve made with citrus, especially oranges, whose peel gives it characteristic bitterness and texture. The rind’s pectin and bitterness define traditional marmalade.
Flavedo: The colored outer layer of a citrus peel, rich in oil glands and pigments. Its aromatic oils make citrus zest intensely fragrant.
Lemon: A yellow citrus fruit with acidic juice and an aromatic rind, commonly identified as Citrus limon. Its acidity and zest make it a distinctive culinary citrus.
Citrus domestication: The long process by which people selected and cultivated citrus plants for fruit, fragrance, and other uses. Human cultivation spread and reshaped citrus lineages across regions.
Citrus essential oil: A volatile oil extracted chiefly from citrus peel and used in foods, fragrances, and cleaning products. Peel oils turn citrus aroma into a concentrated ingredient.
Albedo: The spongy white layer between a citrus fruit’s colored peel and its flesh. This layer contributes much of the bitterness in pith-heavy preparations.
Lime: A group of small citrus fruits, usually green when sold, with acidic juice and aromatic peel. Limes provide a contrasting flavor profile and include several cultivated species.