Bring Aspargus To A Boil In 1/2 Inch Salted Water. Boil For 7 Minutes. Drain And Keep Warm. Combine Vinegar, Mustard, Sugar, Salt, Pepper And Oil. Stir Well. Add Shallots. Pour Mixture Into A Pan And Bring To Lukewarm. Pour Over Asparagus, Sprinkle With Parsely And Serve.