I just wanted to share the email response I got from TABASCO regarding their products:
Thank you for your interest in our TABASCO® Brand Products. All of our products that contain vinegar as an ingredient, use high quality distilled vinegar. Distilled vinegar is produced by fermenting a grain based alcohol. The principal grains used to produce the alcohol are wheat and milo. Gluten and other proteins are completely removed during the alcohol fermentation and distillation process.
According to the definitions set forth by the Codex Alimentarius Commission, a joint standards program of the World Health Organization (WHO) and the Food and Agriculture Organization of the United States (FAO), the following TABASCO® Brand products are considered “Gluten Free”:
TABASCO® Brand Pepper Sauce
TABASCO® Brand Chipotle Pepper Sauce
TABASCO® Brand Habanero Pepper Sauce
TABASCO® Brand Garlic Pepper Sauce
TABASCO® Brand Green Pepper Sauce
TABASCO® Brand Garlic Basting Sauce
TABASCO® Brand New Orleans Style Sauce
TABASCO® Brand Caribbean Style Steak Sauce
These products were analyzed for Gluten by the Food Allergy Research and Resource Program (FARRP) at the University of Nebraska –Lincoln. FARRP was not able to find any detectable amounts of gluten in these products. If the McIlhenny Company can be of further assistance please do not hesitate to ask.