What type of cheese, loved by Wallace and Gromit, had it's sale prices rise after their successful short films?
Explanation
The cheese loved by Wallace and Gromit is Wensleydale. After the success of their animated short films, the sale prices of Wensleydale cheese rose. This can be attributed to the exposure and popularity gained by the characters Wallace and Gromit, who famously enjoyed this particular type of cheese in the movies.