It's named after the Rattler, a Cornish heritage cider apple variety, rather than anything to do with snakes.
Rattler is a cloudy Cornish cider with a tangy apple bite and a smooth finish, made from Cornish-grown apples. It's served ice-cold, straight from the bottle, at Cornish pubs and seaside food stalls alike.
Why it's made this way: Made by Healeys Cyder Farm near Newquay, a family-run producer using Cornish-grown apples, it's one of the county's best-known exports of its centuries-old cider tradition.