We all suffer from recipe block at one time or another. You know: another night of steamed broccoli? More roasted carrots? Get past it by using spice mixtures from the Occasional Gourmet. The site’s got the now-ubiquitous harissa and ras el hanout, but lesser-known spice mixes, like Lebanese zatar—with sesame seeds, thyme, sumac, and cumin—are worth exploring.