This is my holy grail of recipes. I have tried for 12 years to sneak this out of this hole in the wall restaurant a stones throw from Cowboy Stadium. I have paid 2 cooks to sneak it out...both of which got fired before the recipe made it to me, and have spent 10's of dollars getting waitresses, hostesses and anyone else affiliated with the place tipsy for information. Well finally one night when I was spending quality time with Bampa at a bar named Studer's I sang his favorite patsy cline song and who should walk up, correction... stumble up, run into the jukebox, and then throw her arms around me but the head waitress. I quickly turned the conversation to the guacamole and she stopped me and said.."Sarah! I know you been lookin' for that thing for a longtime, and I dunno the recipe but I see em' make it everday so I'll tell you the secret! The use avocados, oil, and vinegar....thats all. No magical ingredients like you've gotten into your head. Now where's your momma and your auntie, baby?" AND IT MAKES SO MUCH SENSE NOW! So here is yesterday's batch, and I'm going to keep trying every Sunday until I get it right. Next week I'm trying Tarragon Vinegar. But Dereck loved this recipe too.