Last summer, when a group of friends gathered around a backyard bonfire, a conversation about ready-to-drink cocktails and seltzers sparked a Stillwater couple's idea for a new beverage company. As their friends lamented about how they were getting sick of the same old canned drinks, Nick and Amanda Barthelemy decided they could do better.
The husband-and-wife duo founded Stilly late last August and officially launched it at the end of June, with an initial line of a lightly carbonated all-natural…