Mason Irish first tried his hand at brewing in the ’90s, in his UMaine dorm. After almost two decades as an arborist, he came back to home brewing during a bad ski season (a previous lackluster winter, he’d learned to knit). In 2016, he and business partner Kevin Antonucci opened Saco River Brewing, where Irish steeps whole-bean coffee, from nearby Maine Morning Micro Roasters, in batches of his Old Course Porter. The coffee imparts a light acidity and toasty quality, he says, complementing the porter’s chocolaty notes. And this winter he’s introducing canning, so the java brew might start showing up statewide in the not-too-distant future.