1.In A Small Bowl, Mix Together The Peanut Butter, Soy Sauce, Black Vinegar, Sugar, And Sesame Oil. Set Aside. 2.Bring A Large Pot Of Water To A Boil. Stir In The Udon Noodles And Cook For 5 Minutes. Add The Frozen Shrimp To The Pot Of Boiling Noodles And Cook For About 3 Minutes, Until The Shrimp Are Pink And Opaque. Turn The Stove Off, But Do Not Remove Pot From The Heat. Stir In The Broccoli, Cover, And Let Sit For 2-3 Minutes. 3.Drain The Noodles, Broccoli, And Shrimp. In A Large Serving Bowl, Toss Together The Noodles, Broccoli, Shrimp, And The Peanut Butter Sauce. Garnish With Chopped Peanuts.