The nutrition data for Frigo Cheese Heads string cheese can be found by following simple steps. To find out exactly what’s in each string of cheese, read the ingredients on the back of the container. The cheese is prepared with part-skim mozzarella, which contains very little moisture. This cheese also has low overall fat and calorie content. There are also 6 grams of protein, 3 grams of fat, and 17% calcium.