Guacamole (Avocado Sauce)

Yield:	4 Cups
Categories:	Mexico, Sauces

2	lg	Avocados
1	md	Tomatoes; peeled, seeded, chopped
1/2	sm	Onions, white; minced
2		Chile, serrano, canned; chopped
		Coriander; chopped fine
		Salt
		Pepper, black
1	pn	Sugar, granulated