Start by selecting perfectly ripe avocados; slice them in half, remove the pit, and scoop the flesh into a mixing bowl.

In the mixing bowl, add the diced red onion, cilantro, lime zest, lime juice, chopped jalapeño, and a pinch of sea salt.

Using a fork or potato masher, begin mashing the combined ingredients to your desired consistency.

Taste your guacamole and adjust the flavor by folding in chopped Roma tomatoes, if using.

Serve immediately with tortilla chips, or store in an airtight container.