On our recent cruise to the Mexican Rivera, Alex and I stopped in Mazatlan and took a little open car called a pulmania into the old city center. The big covered market located by the cathedral has everything from trinkets to fruit, tshirts to pig heads. We wandered through all the different food stall areas - each had its own place. Pork, beef, chicken, legumes, fruit, fish...all as fresh as could be. We were dying to buy some fresh fish, but it was not really gonna last in our cabin mini fridge for more than five minutes.
One of the more interesting things I noticed was the amount of animal parts for sale that one never, ever sees in the USA (ahem...hotdogs...). I watched people buying chicken feet, saw a lady waiting for her freshly buzz-sawed cow head, and smiling pigs heads (minus the ears). I would love to go back to Mazatlan for a week just so I could shop at the market and cook my self silly.