There’s no one word solution. First, let your husband into the kitchen and tell him to add what HE wants on top of the regular stuff. Chances are he’s already got some pretty good ideas of his own.
Otherwise, my family puts in hot dogs, deli meat, ketchup and paprika. I know someone who puts in loads of garlic and it comes out fantastic. I know people who put in beer, bbq sauce, hot pepper flakes, Coke, and peas. (Not all at the same time, don’t worry.)
Just experiment, and eventually you’ll hit your zivug :).