Apologising to Aguilar about the dish, they explain that the meat for the tacos is the only thing they don’t prepare in their own kitchen.
Prepped instead by the vendor, Laxson, the bizarre find was identified as beef lips.
A spokesperson for Laxson told CBS News: ‘We admit cow lips are not the most attractive food item and can resemble teeth. Unfortunately, it made its way into this customer’s dish.’
Aguilar says in a recent post that she has no ill will toward the restaurant, and is grateful for their response.
Il Rincon have said they’re no longer working with Laxson and will not serve Barbacoa until they’re confident this won’t happen again.