M&M's

M and Ms were George Thompson's favourite. While he was thankful that Mrs Rossiter's flat wasn't like the house made of sugar from "Hansel and Grettle", he wished that it was made from M and Ms. He wrote about this in his special book. (PROSE: My Special Book)

Behind the scenes
M and Ms — in the real world stylised as — was a small type of chocolate confectionery coated in a sugary shell. Many different variations also existed.