You can’t get much of a clambake going at Brighton Beach, which is about as close as we at Grub Street get to the ocean these days. But we still pine for the crude pleasures of a summer ritual that has almost no presence in the daily life of New York. Gabrielle Hamilton of Prune felt more or less the same way, and so came up with tonight’s special, a dish of steamed Manila clams, merguez sausage, and corn (for $23) meant to summon the experience, if not the setting. “I think it’s like a clambake,” she says, “just not in a pit of sand in the ground. But it has all the other elements, plus ones you wouldn’t normally find, like smoked paprika, cilantro, piquillo peppers.” But why Manila clams? That doesn’t seem especially traditional. “It isn’t,” Hamilton says. “But we love their saltiness, and they are the perfect size to open at just the right time it takes for the merguez to cook.”