Imperial stouts, bourbon barrel-aged barleywines, and other high-octane beers that once came in 22-ounce bottles — aimed to be suitable for sharing — are now popping up in single-serve cans.

A California craft brewery has gone all-in with radler beer. Firestone Walker just released a trio of imperial radlers, or high-octane fruit-infused beers. It’s another creative pivot within a ...