Barbecued chicken and ribs at Mista B’s BBQ are the kinds of food barbecue purists hunt down like the Holy Grail. Byron Pollard is the titular Mista B, and his small, seasonal operation goes down in a vacant lot in Red Lion every Friday and Saturday of the summer. Arrive early to snag some fall-off-the-bone slow-cooked pork ribs and delectable sides such red bliss potato salad and steamy chopped collard greens and kale.