We all over-indulge a little at Christmas – but do you know how much sugar is in your over-indulgent festive coffee? You’ll be shocked to say the least as some coffees contain as much sugar as seven doughnuts.

Cafe Nero’s mint hot chocolate is the main culprit, containing 59.9 grams of sugar, which is the equivalent of fifteen teaspoons of that sweet stuff.

In fact, many of the highstreet’s festive coffees include more sugar in one cup than the NHS’ daily recommended amount. Adults are advised to consume no more than a total of 30g of sugar daily, while children should have no more than 24g.

Costa, Greggs, Pret A Manger and Starbucks all sell drinks containing over 40g of sugar, with Starbucks’ Eggnog Latte containing 43.1g and Greggs’ Mint Hot Chocolate containing 48.4g.

In response to the findings, the group Action on Sugar said “clearly nothing had changed” since last Christmas, where they campaigned on the amount of sugar in festive coffees.

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Dr Kawther Hashem of the group added: “Last December, Action on Sugar released data from its own festive drinks survey which found many high street coffee chains were failing to reduce the sugar in their milk and milk-alternative festive drinks, which can contribute to obesity, type 2 diabetes and tooth decay.”

We bet Jamie Oliver is fuming with this news.