DULUTH—Melissa Rainville did not take the Peeps pairing lightly. The head brewer from Hoops Brewing smelled the popular bunny-shaped, sugar-coated marshmallow, Easter basket candy. She gave it a nibble. She had a bartender pull three samples from the taps. Smell. Sip. Nibble. Frown. Repeat. When she found it, she knew immediately. "Porter's the right move," she said, referring to the brewery's English Porter, No. 91.