You will find it on the same aisle in the grocery store as the BBQ sauce and worchestershire. I think it is $2-3 for about 8 oz. It is a liquid used for marinade's and such. I think the brand I buy is called "Liquid Smoke" Hickory flavorand is a white label with red and yellow print. It adds that outdoor smoked flavor to indoor recipes. It is very strong and fairly salty, so don't get carried away. I use with most vension recipes, as well as brisket and ribs.