The earliest Citron remains found in a Roman context were discovered in Rome's Forum dating between the late 1st-century BC and the early 1st-century AD. Citron seeds and pollen were also found in gardens owned by the wealthy in Rome and the area around Mount Vesuvius. It took another 400 years for the lemon (Citrus limon) to reach the Mediterranean area and is supposed to have been introduced into southern Italy in AD 200. Citrons and lemons were not widely cultivated nor it seems did the Romans use lemons in cooking. However, it does seem that the wealthy Roman elite prized the trees for their decorative appeal in gardens, pleasant odour, healing qualities, symbolic use and rarity.
Around AD 700 Citrus limon trees were being cultivated in Persia, Iraq and Egypt [2][3], but it was not until the 10th-century that the lemon was first recorded in literature in an Arabic treatise on farming. Like the Romans lemon trees were also used as an ornamental plant in early Islamic gardens. Between AD 1000 and 1150 Arab traders distributed the lemon round the Mediterranean region [4], and the first substantial cultivation of lemons in Europe began in Genoa in the middle of the 15th-century. The lemon was later introduced to the Americas in 1493 when Christopher Columbus carried lemon seeds to Hispaniola. Subsequently, the Spanish conquest throughout the New World helped spread lemon seeds further still. Eventually, they were being grown in California in the years 1751-1768, and increasingly planted in Florida and California during the 19th-century.
Whole lemons are used to make marmalade, lemon curd and lemon liqueur, while lemon slices and lemon rind are used as a garnish for food and drinks. Lemon zest, the grated outer rind of the fruit, is used to add flavour to baked goods, puddings, rice, and other dishes. In Morocco, lemons are preserved in jars or barrels of salt which penetrates the peel and rind, softening them, and curing them so that they last almost indefinitely. The preserved lemon is subsequently used in a wide variety of recipes.
Endnotes:
2. Morton, J., (1987), 'Lemon' in 'Fruits of warm climates', Miami, p. 160–168. Available online: https://hort.purdue.edu/newcrop/morton/lemon.html#Description, (accessed September 2nd, 2021).
3. The lemon reached China sometime between AD 760 and 1297.
4. Lemons did not arrive in Sicily before AD 1000 for example.
5. Scurvy is a disease resulting from a deficiency of vitamin C (ascorbic acid). It takes at least a month of little to no vitamin C in the diet before symptoms occur. Early symptoms include weakness, feeling tired and sore arms and legs. Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding from the skin may occur. As scurvy worsens there can be poor wound healing, personality changes, and finally death from infection or bleeding.
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