Mexican Chorizo is a spicy, fresh (as opposed to dry) Mexican pork or beef sausage which is normally cooked outside of the casing and eaten as a side dish or incorporated into various recipes like tacos, and frequently cooked with eggs.
The typical traditional ingredients in Mexican sausage include parts of the animal that are not eaten as often such as salivary glands and lymph nodes. The spices and other ingredients used include vinegar, chiles, Mexican oregano, paprika, cumin, thyme, and even cloves and coriander. The exact spices vary in commercial versions as well as recipes for homemade chorizo.
Don't confuse this sausage with cured, ready to eat Spanish chorizo. Mexican chorizo is easy to find in most grocery stores and almost all Mexican markets. Walmart stores carries it as does Costco.
Ingredients: Turkey, Seasoning (Paprika, Spices, Salt, Garlic Powder, Onion Powder, Sugar, Paprika Extract, Cirtic Acid, Natural Flavor), Vinegar, Rosemary Extract.
Beef Salivary Glands and Fat, Chorizo Seasoning (Paprika, Salt, Spices, Mustard, Garlic Powder), Beef, Vinegar, Soy Grits, Sodium Nitrate.
In addition to common pork or beef chorizo Jennie-o makes a turkey Mexican chorizo product which is a nice alternative or substitute for people who don't eat pork or beef or are looking for a less fatty meat product. It's a little hard to find right now but it should be appearing on the shelves of your local well-stocked grocery store in 2018 - 2019.
Here is a comparison of key nutritional information between Turkey Mexican Chorizo and Casique Beef Chorizo:
As you can see the turkey chorizo has a significant difference in calories, fat and sodium. That said it keep in mind it is not going to replicate the flavor and texture in authentic chorizo but it's a respectable replacement if you're looking for one.