*You can use Greek yogurt or Mexican Crema (the Mexican version of Crème Fraiche) in place of the sour cream. Click the links for recipes to make your own.
*For a 5-minute Greek yogurt, spoon regular yogurt onto a clean dishtowel that is folded in half. Cover with another dish towel that is folded in half. Let rest for 5 minutes while the excess liquid is absorbed into the towel. Lift off the top towel and scrape up the thickened yogurt.