Students in Essex have come up with a mathematical formula for the perfect roast potato.
The group at Edge Hotel School at the University of Essex worked with maths experts at the Samuel Whitbread School in Bedfordshire to develop it.
They concluded slicing spuds at a 30-degree angle expanded the potato's surface area by 65%.
This creates roasties with a bigger surface area and more edges making them crispier and tastier.
The designer potato was a hit during a taste test with members of the public.
It's not the first time mathematic formulas have been created to perfect everyday cooking. In 2014 students at Leicester University created a formula for the perfect cup of tea.