Ok, this is a no go at this joint. No one cared for it. Try this EASY yum yum sauce recipe that is the closest duplication we've ever made to the Japanese steak house sauce. Add a little spice and it's the same as PF Chang's!
Extraordinary Life: Japanese Steak House Yum-Yum Sauce or Shrimp Sauce Instead of TOMATO PASTE, SUGAR, and WATER, just use ketchup. And it is SHRIMP sauce because that is what we in the South use as a dip for our "skrimps"!