In a medium bowl, mash the avocados with the lime juice and salt. To achieve the texture as pictured, mash with a fork until softened but large chunks remain.
Add the onion, tomato, cilantro, and garlic. Mix until well combined. Stir in the cumin, mixing until well incorporated.
Serve right away or store in the refrigerator until needed. If not serving right away, save an avocado pit to place in the bowl of guacamole. Cover the surface with plastic wrap to help prevent any browning.