Jason Sellers of Plant, a vegan restaurant on Merrimon Avenue, has one tip for Fourth of July: “Grill everything,” he says. “For example, if you’re serving cold sandwiches, grill some romaine lettuce lightly first. The added taste of the flame will liven up the other sandwich ingredients.”

Sellers provided this vegetarian summer grill, a dish he calls an “unexpected combination. The sweetness of the broccoli and peppers matches with the bitterness of the radicchio and is elevated by the mildly pungent leeks.”