You will need a kettle grill with a lid that's at least 22 inches in diameter, such as a Weber. You will also need a chimney starter, trussing supplies, a bag of best-quality charcoal briquettes, and a disposable heatproof aluminum roasting pan.
Recipe adapted from "Mad Hungry," by Lucinda Scala Quinn (Artisan Books). Copyright 2009. Now available in paperback.