Prep all the ingredients, except the avocados, and set aside.
Put the cilantro in the molcajete and crush until the juices, and aroma are released.
Add the garlic, and continue to crush.
Add in the jalapeno, salt, lime juice, onion and avocados: mash until it reaches your desired consistency.
Gently fold in the t'mates.
Top with more cilantro and t'mates for garnish
Serve immediately or cover and refrigerate