Relish the rich world of seasonings in this free, outdoor festival at the Exploratorium. Get a taste for the historical uses of herbs, trace the geographic origins of common, culinary spices, and find out how the chemical defenses of certain plants can be so stimulating—and flavorful. You can also learn about local saltworks, play around with salt painting, and take home special seasoning samples and related recipes. CHSA will be on hand to share scent samples from traditional Chinese cuisine and medicine.