Roll avocados on the countertop to soften before peeling. Remove the skin, reserve the seed on the side, and with a fork, mash the avocado into a mixture.
In a medium-sized bowl, or in a mortar, combine avocado, lime juice, and salt. Mash the ingredients together.
Add the finely chopped tomato, onion, coriander, and chili; mix the ingredients together.
The guacamole is ready to serve as a side dish.
Notes
If preparing in advance, leave the pit of the avocado in the guacamole until ready to serve. This helps prevent the avocado from discolouring into a brown shade.