Those who enjoy citrus fruits might want to pay attention to a nutrition expert's warning about a potential health hazard lurking in their peel. Jenny Tschiesche, a Sunday Times number one bestselling author with numerous cookbooks under her belt, turned to TikTok to share her concerns.

"Do check the labels on your easy peelers to see what they have been treated with," she warned in a video, brandishing a packet of South African-grown mandarins purchased from a supermarket. "Don't grate the zest into your food and certainly don't cook the whole fruit as you might be surprised by what they've been treated with.

"Citrus zest isn't always safe to eat!" Jenny emphasised, reports the Mirror . She went on to explain: "Many supermarket mandarins, and tangerines are treated with surface fungic

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