Few things can upgrade your cooking more than using quality spices and the best way to do that is to never (ever) buy them in a megamart. Purchase from a reputable web-based specialist who carefully sources, stores, grinds, and ships their wares.
I purchase mine almost exclusively from Spice House. You can always start with the essentials before getting a little crazy, or you can try out some of my more spice-centric recipes, below.
Oh, and I’m especially fond of Spice House’s “flat packs” that I use to refill my canisters.