North American brewers are betting on some unusual flavors to convince more consumers to buy beer before liquor, as drinkers increasingly turn to exotic cocktails and other alcoholic beverages.

In the latest move, Molson Coors Brewing Co. said Tuesday it will launch Coors Light Iced T in Canada next month ahead of a possible U.S. rollout. The citrus-like, iced tea-flavored beer will have roughly 4% alcohol content but no caffeine.

Beer...