I used lemon Dijon mustard but really any variety would do - for a little extra spice try chipotle mustard (Saucy Mama has a great one) or maybe horseradish mustard or rich brown mustard. (kitchenbelleicious.com)
I also like it a bit spicier so a little extra spice make... (allrecipes.com)
Those who wanted a little extra spice had salsas & sauces to choose from and those who didn't want something as spicy weren't overwhelmed. (cinnamonspiceandeverythingnice.com)