Mmm, mmmm, guacamole

My mom made this all the time in the summers, and though it's not "officially" her recipe, to me, it is.

2 medium tomatoes, peeled and chopped
2 Tbsp onion, minced
1 tsp chopped green chiles
2 Tbsp white vinegar
1 tsp salt
1/4 tsp fresh-ground pepper
2 avocados, mashed (but not until ready to serve)

Combine everything but the avocados and refrigerate at least an hour. Just before serving, mash the avocados and fold them into the tomato mixture without smashing the tomatoes.

I'd suggest doubling the recipe and getting a big bowl of tortilla chips and rock out.