He was served by Joely Dearman, 22, and Zachariah Fox, 28, both seasonal workers from north Devon.
“What’s selling quickest this morning?” he asked.
Told it was the pasties, he added: “They smell delicious. Makes your mouth water.”
The Prince also revealed he had enjoyed a dip in the sea this morning.
Outside, he told tourists lined up to greet him that he wished he could stay. “My family are very upset I’m here without them,” he laughed. “The children will kill me if I don’t go home later.”
He asked them if they were waiting to catch a boat. “We’re waiting for you!” one woman said. “I’m never sure,” William laughed.