ISO: shrimp sauce

I am looking for the japanese restaurant shrimp sauce that they put on the shrimp while they are cooking it.  They usually cover the shrimp with a lid of some sort while it cooks.  I think the sauce I'm looking for might be more yellow.  The hint I got from our chef the last time we ate there was that it was "just like mayonnaise", but with a few other spices.  I have tried making my own with egg yolks, rice vinegar, garlic and a few other spices, but haven't yet hit upon the right combination.
Any ideas??

Thanks!

Reviews and Replies:
1	ISO: shrimp sauce
	Cheryl

2	Recipe: Shrimp Sauce (Japanese restaurant-style)
	Robyn

3	ISO: Shrimp Sauce
	Angie

4	sauces
	Darrell

5	Recipe(tried): Shrimp Sauce - Reply to Robyn
	Lyn/Maryland

6	ISO: Shrimp Sauce
	Charlene

7	ISO: shrimp sauce
	christie s. bremen

8	Recipe: Shrimp Sauce (Japanese restaurant-style)
	Becca SC

9	ISO: yum yum sauce?
	Amanda Lynchburg VA

10	Recipe(tried): Japanese Restaurant-style Shrimp Sauce
	s.simmons

11	Recipe(tried): Japanese Restaurant-style Shrimp Sauce - the correct recipe is the first one posted
	reese from myrtle beach

12	Recipe(tried): YumYum Sauce (Japanese Restaurant Style)
	Kt.K MD