It's Greek to me

     So what makes greek yogurt different from regular yogurt?  Well, that depends on the manufacturer, actually.  Most greeks are thicker because they have been strained of the whey.  The straining removes liquid and leaves more concentrated solids behind.  That's what makes greek yogurts thick and rich, even if they're fat free.  They're also higher in protein.

     But some prefer to create a faux greek yogurt by thickening regular yogurt with pectin and/or inulin (see VinnyPost "The Sneaky Fiber" 6/25).  And some use things like corn starch and gelatin and proceed to add milk and whey protein concentrates to boost protein levels up.

     While greek yogurts seem to have a lot going for them there is a downside.  By straining out calcium-rich whey they end up with less bone fortifying calcium.  In comparison, the greeks have about 15-20% of a day's worth of calcium, while the non-greeks have 25-30% of the daily requirement.

     In addition to taste, you have to consider what's more important to you: protein or calcium?