1. Scrub oysters thoroughly, and rinse under cold running water until all grit is removed. Shuck oysters (leaving the meat on the half shells); carefully cut the foot of each oyster with the shucking knife.
2. Combine vegetable juice and next 5 ingredients (through salt) in a liquid measuring cup. Stir in hot sauce, if desired. Fill each of 10 shot glasses with 2 1/2 tablespoons juice mixture. Place the meat from one oyster in each glass. Discard shells.