Guacamole a la Moña

This is one of the recipes that our housekeeper, Moña, makes. I'm not sure of all the proportions since the ingredients back home are slightly different. I will try and provide the U.S. equivalents.

2 roma tomatoes
1/3 English cucumber, peeled
1/4 sweet onion
2 green chili peppers (smaller than jalapeños, but 1 jalapeño could work)
3 ripe avocados
a couple of tablespoons of cilantro, chopped
juice of 1/4 lime
dash of apple cider vinegar

Directions:
Chop the sides of the tomatoes off, leaving the juicy core. Discard the core and mince the sides. Mince the cucumber, onion and pepper (choose to remove the seeds for less spiciness). The tomato, cucumber and onions should all be about the same quantity when minced. Add the cilantro and mix up with your hands. Add the avocados to a bowl and mash up with a potato masher. Add all of the other ingredients to the bowl. Serve with chips!