I have looked all over but cannot find info on whether I can have sour cream or not! And what kind.... Fat Free? Low fat? Full Fat?

I REALLY want some on my Mexican frittata!!

You can have 1 teaspoon, yes, 1 teaspoon of sour cream as a flavor enhancer. It does not count as a "healthy fat." Remember that condiments are limited to fewer than 3 a day. So, if this is your only condiment, you could crank it up to 2 teaspoons.

Here's a link to the condiments list:
http://www.medifastmedia.com/shared/...mendations.pdf

Jay