Citron

Citron may be introduced as soon as baby is ready to start solids, which is generally around 6 months of age. 

Citron is one of the oldest citrus fruits, believed to be the ancestor of lemons and limes. Originating in South and Southeast Asia, it spread west through ancient trade routes, becoming a cherished fruit in the lands around the Mediterranean. In Jewish traditions, the citron—known as etrog—holds cultural and religious significance during Sukkot, while in Italian and South Asian cuisines, it is often eaten candied, pickled, or infused in syrups.

• Use fresh citron zest to flavor foods—just a pinch adds aroma and brightness.

• Wash the rind thoroughly before zesting.

• Store whole citron in the refrigerator to extend freshness.

Not typically, since citron is often served as jams, syrups, and other forms, and these present a low risk when safely prepared for a child’s age and developmental ability, though, in theory, an individual could choke on any food. To reduce the risk, prepare and serve citron in an age-appropriate way as described in the How to Serve section. As always, make sure you create a safe eating environment and stay within an arm’s reach of baby during meals. 

Learn the signs of choking and more about choking first aid in our free guides, Infant Rescue and Toddler Rescue.

No, citron is not a common food allergen. However, self-reported sensitivity to citrus is described frequently in medical literature around the world. Also, individuals with Oral Allergy Syndrome (also called pollen food allergy syndrome) may be sensitive to citrus fruits such as citrons.^[1] In particular, individuals who are allergic to grass and certain tree pollens may also be more sensitive to citrus fruits.^[2] Oral Allergy Syndrome typically results in short-lived itching, tingling, or burning in the mouth and is unlikely to result in a dangerous reaction. Peeling or cooking citron can help minimize the reaction.^{[1] [3]}

Note that citron is highly acidic, and exposure to the acid may cause a harmless rash on the skin it touches, typically around the mouth. It usually dissipates on its own after a short time.^[4] Additionally, the acid in citrus fruits like citrons can be irritating on a baby's digestive tract, as well as cause or worsen diaper rashes when consumed in excess. Barrier ointments (such as pure petroleum jelly or a plant-based oil/wax combination) can be applied to the face before mealtime, as well as to the diaper area, to help protect the skin from acidic foods. 

The peel of citron contains a compound called limonene, which is a known contact allergen, and can cause allergic contact dermatitis in sensitized individuals.^{[4] [5]} Citron is associated with phytophotodermatitis, a skin condition that occurs when a person gets the juice from the fruit on the skin and doesn't wash it off. Compounds in the juice are activated by the sun and cause a pigmented, itchy, and occasionally blistering and painful rash on the skin.^[6] Cleansing the skin after citrus contact and using sun protection can help to prevent the phytophotodermatitis rash.

Yes, although citron is often consumed in small amounts. The flesh of citron provides vitamin C to support the immune system and nonheme iron absorption, while the pith (the white spongy part) is rich in pectin to support digestive health.^[7] Overall, citron is packed with plant compounds like polyphenols that offer antioxidant properties and promote overall bodily resilience.^[8]

Citron is often candied and used in desserts and other sweets, and delaying the introduction of sweetened foods can help establish a foundation for a varied diet and establish healthy habits, while also reducing the risk of dental cavities and supporting healthy growth patterns. That said, a taste here and there of age-appropriate citron sweets is perfectly fine.

No. Citron is a distinct species of citrus and one of the original ancestors of modern lemons. It has very little juice and a thick, fragrant rind that’s used mainly for zesting, candying, or flavoring.