It’s a good sign as you approach Shark’s BBQ: two enormous black cylindrical fire pits and stacks and stacks of firewood sit outside. Chef-owner Louai Sharkas uses no gas or electricity to fire his ...

Thus did Heath Hall, president of D.C.-based Pork Barrel BBQ, begin his pitch on Sunday night’s episode of “Shark Tank,” the ABC show where entrepreneurs ask a panel of venture capitalists to fund ...