Sierra Mist was a lemon-lime flavored soft drink line introduced by PepsiCo in 1999. By 2003, it was available in all US markets. The name is a play on Mountain Dew: sierra is the Spanish word for "mountain range" and both mist and dew are composed of water droplets. The brand was aimed at competing with Sprite and 7 Up.
Insider tip — Mist Mountain towers above the Highwood River valley in Alberta's Kananaskis Country — a wilderness recreation area in the Canadian Rockies south of Banff with comparable scenery but a fraction of the crowds. These backcountry hot springs require a multi-hour hike through mountain wilderness to reach, rewarding visitors with thermal pools amid alpine meadows where grizzly bears roam the valleys below the Mist Mountain massif.