A mum has beaten odds of one in 1,000 after finding 12 double yolkers in a box of a half a dozen eggs.

Jenny Lee from Flackwell Heath, Buckinghamshire, paid £2 for eggs during her weekly Tesco shop last week on Thursday, November 2.

But while the mum-of-three was rustling up breakfast for her children she was stunned to find three eggs she cracked had double yolks.

She rushed to take pictures of her shock discovery and couldn't believe her eyes.

Bucks Free Press: Tesco xl eggs

Jenny said: "After a trio of brunch shocks and discussions as to whether this is a thing or not, I feel it’s important to share this information, before my cholesterol level goes through the roof.

"This week we purchased 6 ‘very large’ eggs from Tescos Loudwater.

"Long story short, every single one of them was a double yolker. Can you imagine! I’ve never had one in my life!"

"They all tasted amazing! Very filling. I think I dropped the f bomb when the I cracked my 2nd double open."

Bucks Free Press: Jenny Lee with her daughter and dog

The family have been enjoying cracking open the eggs this week to find more double yolks.

Bucks Free Press: Double yolks

Tesco say their eggs come from selected farms where hens are free to roam and forage and are safely housed in barns overnight.

Free range eggs come from producers inspected to RSPCA welfare standards by the RSPCA's independently certified farm assurance scheme.

According to egginfo.co.uk, Double yolkers (eggs containing two yolks) tend to come from younger hens whose hormone systems are still naturally developing.

The website says: "It is very rare for an egg to be ‘double yolked’ and, although we cannot be specific, the instance of double yolkers is thought to be less than 0.1%.

"However, because all the hens in a flock are the same age, it is not unusual to find more than one double yolker in a box."

Have you ever found a double yolk? Let us know!