I've always enjoyed ham, salad and mayonnaise. Particularly when I get it from college where they have ridiculously nice fresh mayonnaise. Some of the stuff from jars is absolutely horrid. If I'm in a rush and just buying something from Spar or M&S (good for sandwiches), I tend to just get a prawn mayonnaise one because they're nice. Sausage and brown sauce on a nice white barmcake is always love too.