So maybe you've got a favorite spice rub that they don't sell anymore. Or maybe you thought you had another bottle of that seasoning blend when you planned for this recipe but you can't find it anywhere. Whatever the reason, we've all wanted to make some more of a blended spice that we didn't make ourselves. First off, the best thing to do is to supplement before you start using. Don't season half your meat with the blend and then the other half with something totally made up. You're never going to match it precisely, so it's better to mix up more and then mix what you've got left of the original in. If you've got most of what you need, or if you're adding it to a dish throughout the cooking process (remember, spice early, spice often ), you can usually just stretch it with a bit of the major flavor. For an unfortunate number of spice blends you're likely to find in your local supermarket, you can just add some salt, pepper, or sugar, or ...