Quote from : Harry Potter and the Goblet of Fire Book

Hedwig didn't return until the end of the Easter holidays. Percy's letter was enclosed in a package of Easter eggs that Mrs. Weasley had sent. Both Harry's and Ron's were the size of dragon eggs, and full of home-made toffee. Hermione's, however, was smaller than a chicken's egg. Her face fell when she saw it. "Your mum doesn't read Witch's Weekly, by any chance, does she, Ron?" she asked quietly. "Yeah," said Ron, whose mouth was full of toffee. "Gets it for the recipes." Hermione looked sadly at her tiny egg.