As already suggested, I use plain yogurt as a substitute for sour cream. It can also be used in baking and creamy sauces. If you ever make cornbread, add a tablespoon or two to the batter, and some creamed corn. Yummy!
I personally don't like yogurt in smoothies, preferring to add just a bit of tonic water or pomegranate juice, and a scoop of whey protein powder (mine's gluten and lactose free). Nonetheless, the occasional liquid meal can really be a good and filling way to take in some fresh fruit fiber, carbs and protein.
"Life is like a banquet, and most poor suckers are starving to death." Auntie Mame
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| current weight: 138.5