Consumer champions Which? asked members to rate the quality, taste and value for money of the Christmas food they bought - and whether they would recommend them to others

Folic acid is so be added to non-wholemeal flour to protect newborn babies from serious brain and spine problems

Which? looks at prices at Aldi, Asda, Lidl, Morrisons, Ocado, Sainsbury’s, Tesco and Waitrose to find the cheapest grocer - and this month, the bill for the winner came to £111.66 on average

But none of these were just revealed as the fastest-growing supermarket in the UK – and interestingly, the one that was crowned doesn’t even have any brick-and-mortar stores.

Aldi received a score of 84% - beating the likes of Marks & Spencer at 82%, Waitrose at 80% and Lidl at 78% - in a survey of over 8,000 Which? members.