I have done the following excursion but done it privately and found it very enjoybale. Josefina Luigi is the lady who is in charge of the following and she has a very good reputation in the following industry in Cozumel. Whether you are cruising or stay in the Island for a few days you are more than welcome to join her. She is located down town and so you can do some shopping when you are done with her.
Before the class starts she normally take her students on a local market tour to purchace everything need to cook on hat day and so you get a feel of the local people as well. You get to enjoy what you cooked and also receives a certificate after the lessons.
For mor information you can contact her on the following e-mail: nmatlhong@hotmail.com