Prince William had his wife, Kate Middleton, in hysterics this week after a lighthearted baking mishap during the couple’s visit to Northern Ireland.

On Tuesday, the Prince and Princess of Wales stopped by Long Meadow Cider, a family-run apple farm in County Armagh, after visiting the Northern Ireland Fire and Rescue Service Learning and Development College in County Tyrone earlier in the day.

At the cider farm, the royal couple were invited to show off their culinary skills by making traditional potato apple bread — but things didn’t exactly go smoothly for the future king.

Wearing matching aprons, William and Kate got to work rolling out their dough. But while Kate quickly shaped hers into a neat circle, William struggled to keep his from turning into something more abstract.

“Do keep up,” he joked to Kate, before one staff member gently advised him to “try and keep it into a circle.”

Laughing, William replied, “A circle? Now you tell me! If you look this way, it looks like a circle. A rectangle circle. This is a new variety!”