Could yogurt be substituted for the sour cream. I suppose with the butter and all, it is silly to be too concerned about it, but yogurt is something I usually keep on hand, so would be able to try these before my next shopping trip . . . I did try your Classic Puff Pastry recipe, and it produced some beautiful turnovers if I do say so myself. However, it was a 3-day project! (If I weren't at work most of the day I could have done it in 2) So this alternative is quite appealing. Thank you! I think it would work. I haven't tried it. It is the fat that helps make the flakiness. Try it and let us know how it comes out. Mary @ KAF

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