How to Make It
To make the chimichurri sauce, combine the vinegar, parsley, olive oil, garlic, jalapeño and salt in a bowl. Let the chimichurri sauce stand at room temperature for 1 to 4 hours.
Light a grill. For coiled sausage, cross 2 long skewers through the sausage, making an X. For sausage links and chicken wings, pierce each piece crosswise with 2 parallel wooden skewers, held about 1/2 inch apart, threading 4 or 5 rows on each pair of skewers. Grill them over a moderately hot fire, turning once or twice, until crusty and cooked through. Transfer to a large platter and cover loosely with foil.
Stoke the fire with additional charcoal; for gas grills, increase the heat to high. Add 1 tablespoon of the sauce to each of two 10-inch metal cake pans and divide the clams between them. Set the pans on the grill, cover the grill and steam the clams until they open, about 8 minutes. Serve at once and pass the remaining sauce separately.