String Cheese
String cheese is low-moisture, part-skim mozzarella that's been heated and stretched in a specific way so the proteins align into layers, which is why it peels apart in strings instead of crumbling or slicing cleanly. It's sold in individually wrapped sticks, mild in flavor, and mostly known as a portable snack, but it melts and behaves just like regular low-moisture mozzarella in cooking.
Varieties
Most string cheese is made from part-skim mozzarella, but some brands offer whole-milk versions with a richer flavor and softer bite, and a few make cheddar or pepper jack versions that don't peel as cleanly since those cheeses aren't stretched the same way during production.
Buying tips
Check the wrapper for a smooth, unbroken seal and avoid sticks that feel soft or greasy through the packaging, which can signal age or improper storage. Refrigerated case placement matters too; avoid sticks near the front of open dairy cases where temperature fluctuates most.
Substitutes
Low-moisture part-skim mozzarella (block or shredded) — 1:1 by weight
Same cheese, just not stretched into strands. Shred or slice it yourself for cooking; melts identically.
Fresh mozzarella — 1:1 by weight
Softer, wetter, and milkier tasting. Pat it dry before using in cooked dishes to avoid extra liquid.
Provolone — 1:1 by weight
Firmer and sharper in flavor than string cheese, but melts well and works in similar snacking or cooking uses.
Babybel or other snack cheeses — 1:1 by count for snacking
Good swap for lunchbox snacking, but doesn't peel into strings and has a different, waxier texture.
Storage
Keep string cheese refrigerated in its original wrapper, which is airtight and keeps it fresh until the printed date. Once opened, rewrap tightly in plastic or a resealable bag; it dries out and gets rubbery within a couple of days if left exposed. It can be frozen, but texture turns crumbly and less stretchy after thawing, so it's better suited for cooked dishes than snacking after freezing.
How to use
Eaten cold as a snack, but also melts well shredded into pasta bakes, quesadillas, or grilled cheese, and can be sliced into rounds for a quick low-effort topping on pizza or casseroles. Peeled into strands, it works as a fun garnish for kids' meals or lunchboxes without needing a knife.
What it pairs with
Pairs well with crackers, apple slices, or grapes for snacking, and with marinara, pesto, or grilled vegetables when melted into cooked dishes.
Nutrition
A typical stick (about 28 grams) has around 80 calories and 6-7 grams of protein, making it a common portable protein source; it's also a solid source of calcium.
FAQ
Why does string cheese peel apart in strings?
During production, the curd is heated and mechanically stretched in one direction, which aligns the milk proteins into parallel fibers. That alignment is what lets it peel lengthwise instead of breaking randomly like a block of cheese.
Can string cheese be melted for cooking?
Yes. It melts the same as any low-moisture mozzarella; just shred or slice it first since whole sticks melt unevenly and take longer to soften through.
Is string cheese the same as mozzarella?
Yes, it's made from the same low-moisture, part-skim mozzarella used in shredded or block form, just processed with an extra stretching step to create the peelable texture.
How long does an opened string cheese stick last in the fridge?
About 2-3 days if rewrapped tightly. Left unwrapped or loosely covered, it dries out and turns rubbery within a day.
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