Preservative free. Non GMO Project verified. nongmoproject.org. Hail to the Heat: Get things cooking with this spicy, sweet, & savory blend of flavors. Use it on everything from Thai dishes to burgers & fries. We handpick tabasco peppers and age them in oak barrels to create our famous pepper sauces, just like our legendary founder Edmund McIlhenny first did in 1868. Just a touch of Tabasco Sauce adds a big kick to this Sriracha! tabasco.com. Customer Service: 1-800-634-9599.