Whenever you order a multi-pack you will get a free mystery bottle. Just add both a multi-pack and the FYM Mystery bottle to cart and the discount will be applied automatically at checkout. The mystery bottle will be a random bottle of one of FYM's 6 sauces. It could be an Exxtra Hot, either Beer Sauce, or any of the Original 3 sauces.
Just add both the multi-pack and the Mystery bottle to and no need to worry about a coupon code, the discount is automatically applied!