Skyr yogurt is an Icelandic yogurt that has more protein per ounce than Greek yogurt, 20 vs 18 grams per serving. It’s ultra-thick and creamy made with milk from grass-fed cows. The plain yogurt is only 100 calories per serving. It also comes in flavors such as strawberry, blueberry, and vanilla. All are fat-free, low-cal, and low in sugar.