Cheese jumping

Why is Double Gloucester cheese called Double Gloucester, and why is Single Gloucester cheese called Single Gloucester? The British Cheese Board, which on its own authority is “the voice of British cheese“, says that no one quite knows, that “various stories exist”.

Their history of those cheeses includes a description of how, long ago, certain persons involved with British cheese would use physics knowledge in their work:

“It is said that buyers of Double and Single Gloucester would often jump up and down on the cheese to assess its grade and suitability.”

BONUS (somewhat related): Cheese rolling

BONUS (unrelated): Jumping Jack cheese