All the hard-to-find ingredients for the dishes from Rioja can be ordered from Tienda.com (888/472-1022; www.tienda.com). The Palacios brand of Spanish chorizo, made in the Rioja region, is the only authentic Spanish chorizo imported into the United States. Buy two 6.5-ounce packages or "Oreados" mini chorizos ($5.49 each) for the potatoes stewed with paprika and chorizo. Sweet Spanish paprika costs $4.95 per 2.8-ounce tin, and "wood-fired" piquillo peppers cost $7.95 per 8-ounce jar.
