I figured I ought to post a recipe for guacamole since it goes well with basically any Mexican dish that involves tortillas (including the potato enchiladas). I always just eye my measurements, but I'll try to give you some guidelines:
2 ripe Hass avocados, peeled, seeded and mashed
1/2 red onion, sliced and diced
1/2 ripe tomato, seeded and chopped
about a tablespoon of lime juice (fresh is preferred)
a handful (about a 1/4 cup) chopped fresh cilantro
a dash each of salt, pepper, garlic powder (this should be adjusted to taste)
Mix all ingredients together in a bowl. If you would like to add some heat, add a bit of chopped fresh jalapeno. Make sure your red onion is fresh, not too old. An old onion is an angry onion and it can overpower the other flavors.