Greek yogurt has more protein, but watch the sugar

Yogurt continues to grow in popularity. Sales now top 7 billion dollars a year. A lot of the latest growth is propelled by Greek-style yogurt. Most yogurts are nutritious and a good source of calcium. Greek yogurt has even more protein and that's part of the appeal.

Consumer Reports checked out 27 popular Greek yogurts-in plain and vanilla flavors-for both taste and nutrition.

The nutritionists noticed something unusual when reviewing the nutrition facts labels. Whole Foods' 365 Everyday Value Fat Free Plain Greek Yogurt claims to have only 2 grams of sugars per 8-ounce cup. That seemed really low. The other plain Greek yogurts Consumer Reports looked at had 5 to 10 grams of sugars per cup.

So Consumer Reports tested 6 samples and found that the Whole Foods yogurt averaged 11 grams of sugar-more than 5 times the label's claim.

A spokesperson for Whole Foods says that Consumer Reports' findings are not consistent with the test results it has gotten from reputable third-party labs. It is investigating the matter and says it will take corrective action if any is warranted.

The Whole Foods yogurt received a "Good" rating In Consumer Reports taste tests, but others scored much better.

In the end, Fage Total 2% Fat was the top rated plain Greek yogurt. It's thick and creamy with a well-balanced flavor.

Among the Greek vanilla yogurts, Wallaby Organic Whole Milk is the best in the tests. It almost tastes like a dessert with real cream and vanilla flavors, but it does have eight grams of fat and 27 grams of sugars per cup.