Created by Kerfuffle-Upon-Wincle (KUW) on December 6, 2014
Step 1: Stir together first 13 ingredients in a bowl.
Step 2: Cover and chill 1 to 24 hours.
Step 3: Just before time to serve, stir in avocado; add salt and pepper to taste.
Step 4: Serve with tortilla chips.