"Seen the Fizzing Whizbees, Harry? And the Jelly Slugs? And the Acid Pops? Fred gave me one of those when I was seven -- it burnt a hole right through my tongue. I remember Mum walloping him with her broomstick. Reckon Fred'd take a bit of Cockroach Cluster if I told him they were peanuts?"
-- Ron Weasley
Sweets and confections are popular with wizards and Muggles alike – especially young people (though Albus Dumbledore is one exception).