When I was a child, one of my favorit hamburger places was Jack-in-the-Box. They had a special sauce that I cannot describe now as an adult, but I really loved the taste. When I ate at a J in the B in California a few years ago, the burgers were different. The last time I had an old style J in the B burger was in 1988 in Illinois. Can anyone here relate? What was in the sauce (ketchup/mustard combo?) and is it available anywhere? Thanks.