Egg prices have rocketed by 85% as fears mount over potential milk shortages.
Some eggs cost almost twice as much as they did a year ago.
And it was warned milk may vanish from the shelves if prices paid to farmers fall further.
The Grocer magazine said a third of eggs in the biggest nine supermarkets leapt in price in the past month.
The largest hike was a six-pack of free-range eggs at Asda, up 18% to £1.95, making it 30% dearer than at the start of 2022.
Iceland’s 15 Mixed Sized Eggs, which rose 5.7% to £1.85, are up to 85% dearer than a year ago.
In November, prices rose by up to 20% as farmers cut output due to production costs and low profits.
The British Egg Industry Council said: “Demand for eggs is strong during Christmas, which has put added pressure on the supply chain when availability is already tight.”
Some stores want to cut the price they pay for milk but farmers could be forced to slash output.
John Allen, from dairy consultancy firm Kite, warned of potential milk shortages later this year.
He said: “We have never seen the gap between the cost of production and commodity levels as large as they are now.”
