An hour before the cocktail hour is to commence, combine all the ingredients for the sangrita in a blender. Blend until frothy. Cover and refrigerate for the flavors to marry. To serve, pour the sangrita into 8 straight, tall shot glasses. Pour the tequila into 8 identical shot glasses and place them all on a tray lined with a napkin desired, and serve immediately with lime wedges and salt, if desired.
c.1997, M.S. Milliken & S. Feniger, all rights reserved