But do you want Greek or Icelandic? Dairy or oat or almond? And is it better for health reasons to go with a nonfat or low-fat yogurt rather than a whole-milk version? One thing is clear ...

Reducing the amount of lactose (a natural sugar) is what gives Greek yogurt its signature mouth-puckering tartness. You can find this style of yogurt in whole milk, low-fat and nonfat varieties ...