Welcome to Dover, New Hampshire, where you’ll find a restaurant from a James Beard-nominated chef and the state’s first kombucha brewery.The Brown Butter Miso Ice Cream, Caviar, and Candied Celery Leaves from Stages at One Washington.Credit: Dani Sykes Photography/Stages at One WashingtonKey PointsDover is emerging as one of New Hampshire's buzziest towns—a detour from nearby cities like Portsmouth and a dining destination in its own right.Chef …