Chocolate Frogs also come in a white chocolate variety. A popular game for Hogwarts students is to let a bunch of Chocolate Frogs hop around, and to grab the normal ones while avoiding the white ones.
In 1991, a chocolate frog was seen on a table in the Great Hall at the Sorting Ceremony. The same year Hermione Granger gave Harry a large box of Chocolate Frogs for Christmas.
When Harry Potter was in the Hogwarts infirmary after his skirmish with Professor Quirrell and Voldemort in 1992, he received many treats from his friends and admirers. Whilst Harry was unconscious, someone consumed all of the chocolate frogs. During his bedside visit, Dumbledore posited that Ron Weasley had done it, so Harry could have the cards without going through the "trouble" of eating the frogs.
Also, a chocolate frog was useful in fighting off his dementor-boggart when Remus Lupin taught Harry the Patronus Charm.
In January 1994, after Harry's first attempt at summoning a Patronus, Professor Lupin gave him a Chocolate Frog to eat. Hagrid gave Harry Chocolate Frogs for Christmas in his fourth year. Ron got Chocolate Frogs for Christmas in his fifth year and in the Hospital Wing after he was injured in the Battle of the Department of Mysteries .
Later on, Harry Potter, Ron Weasley, and Hermione Granger were placed on Chocolate Frog cards for their efforts in defeating Lord Voldemort. Both Ron Weasley and Albus Dumbledore considered being put on Chocolate Frog cards as their proudest moment.
Chocolate Frog cards
Chocolate Frog Cards come in Chocolate Frogs candy (along with a chocolate frog). Hogwarts students collect and trade them. The faces on some of the cards are famous even to Muggles, although their magical abilities were not always recognized by the non-magical community.
The Chocolate Frog collectible cards played an important role in Harry, Ron, and Hermione's first year at Hogwarts, as Dumbledore's card enabled them to ascertain the identity of Nicolas Flamel.
Some notable cards are: Albus Dumbledore, Morgan le Fay, Ptolemy, Circe, Paracelsus, Merlin, Cliodna, Hengist of Woodcroft, Alberic Grunnion, Harry Potter, Hermione Granger, Ronald Weasley, and Agrippa.