Chipotle actually details every ingredient it uses in the queso via a simple visual chart on its website, including aged cheddar cheese, tomatoes, tomatillos, milk, seasonings, and multiple types of peppers.
“Although queso was the number one requested menu item, we never added it to our menu before now because we wouldn’t use the industrial additives used in most quesos,” Chipotle CEO and Founder Steve Ells said in a statement. “Additives make typical queso very consistent and predictable, but are not at all in keeping with our food culture. Our queso may vary slightly depending on the characteristics of the aged cheddar cheese used in each batch, but using only real ingredients is what makes our food so delicious.”
You can expect to order queso just like you already order guac at Chipotle. You can add it to your burrito, burrito bowl, or other entree for $1.25 or you can order it on the side with chips in two sizes, the larger of which will set you back $5.25, although prices will vary by city. Unfortunately, it doesn't look like Chipotle is celebrating the big launch with free queso or buy-one-get-one (BOGO) deals, but considering the numerous free food promotions it has launched in recent months, it probably won't be long before you can score some for free.