This rub is one of those things that make you go mmmmmmmm! While you may not automatically think of pairing coriander and coffee, it's a flavor combo that works oh so well for beef, pork, duck, venison, and so on.
Coffee-Coriander Steak Rub
2 tablespoons ground coffee
3 tablespoons smoked paprika
1½ tablespoons coriander seeds, lightly toasted and ground
½ teaspoon dry mustard
1 teaspoon coarsely ground black pepper
2 tablespoons kosher salt