Hass are our favorite type of avocado for guac., but any ripe avocado will work nicely. Adjust the individual ingredients to your personal taste. If you want a little spice, but not too much, remove the seeds from the jalapeno before dicing, or just use less.
Stir and mash together avocado pieces and lime juice until the avocado is almost your preferred consistency. Stir in tomatoes, jalapeno, and cilantro.
Season with salt to taste and add more lime juice or jalapeno if desired.
Serve immediately. If not serving immediately, to best keep the guacamole from browning, keep it as airtight as possible. Press a piece of wax paper into the top surface and seal the bowl with plastic wrap.