Mozzarella is one cheese name covering several genuinely different products. Fresh mozzarella sold in liquid-filled tubs behaves nothing like the shrink-wrapped low-moisture block sold as pizza cheese. Bufala from Campania is not interchangeable with cow mozzarella from Wisconsin. Burrata is mozzarella technically but functions differently in every cooking context. This guide separates the categories, explains how each one behaves under heat, and which style belongs in which dish.
The defining variable across mozzarella types is moisture content. Fresh mozzarella runs 50 to 60 percent water. Low-moisture mozzarella runs 45 to 52 percent. Aged mozzarella (rare in the US, common in some regions of Italy) drops below 45 percent. The water content drives almost everything else: how the cheese melts, how much it browns, how it tastes on its own, and how it holds up to long cooking times.
Fresh mozzarella
Fresh mozzarella is the soft, white, milky cheese sold in tubs or balls swimming in salted water or whey. It is made by stretching curd in hot water until it becomes elastic, then shaping into balls (ovoline) or larger forms. The cheese is consumed within days of production traditionally, and within 2 to 3 weeks for commercial product with controlled cold chain.
Flavor: milky, sweet, faintly salty, with a fresh dairy note. The texture is soft and yielding, with a slight tear that releases liquid when cut. The flavor is delicate and quickly overwhelmed by stronger ingredients.
Heat behavior: fresh mozzarella melts at a relatively low temperature (around 150 degrees Fahrenheit) but does not stretch or brown well. The high water content makes it weep liquid as it heats, and the low fat-to-water ratio prevents the dramatic browning of low-moisture mozzarella.
Best uses: Caprese salad with tomato and basil, direct consumption, pizza Margherita (with the moisture-management caveat above), spreading on toast with olive oil, layering in lasagna with strong-flavored sauces that can take the extra moisture.
Wrong uses: typical American pizza where the cheese needs to brown and stretch, deep dish where the cheese is buried and steamed, sandwiches where the bread cannot handle the leaching water, applications where the cheese is the dominant flavor in a hot dish (it will read as bland because the delicate flavor cooks off).
Low-moisture mozzarella
Low-moisture mozzarella is the firm, slightly elastic cheese sold in shrink-wrapped blocks or pre-shredded bags. It is made the same way as fresh mozzarella but then aged briefly (5 to 10 days) to drive off moisture. The result is a denser, firmer, more flavor-concentrated cheese with a longer shelf life (4 to 6 weeks unopened).
Flavor: more concentrated dairy flavor with a slight tang from short aging. Saltier than fresh mozzarella in proportion to the moisture loss. The flavor profile is engineered for melting and browning on pizza, not for eating cold.
Heat behavior: this is where low-moisture mozzarella excels. It melts at 130 to 150 degrees Fahrenheit, stretches dramatically when pulled, and browns to a golden crust on the surface in a hot oven. The lower water content means less weeping, more even coverage, and the classic pizza cheese behavior.
Best uses: American-style pizza, calzones, baked pasta dishes (ziti, lasagna with American-style ragu), grilled cheese with a flavor-forward bread, mozzarella sticks, French onion soup variants, casseroles.
Wrong uses: Caprese salad and direct consumption (the cheese is too firm and lacks the milky flavor of fresh), pizza Margherita (it lacks the milky character that defines the style), any dish where the cheese is supposed to be soft and fresh in flavor.
Whole milk vs part-skim
Within the low-moisture category, whole milk and part-skim are two distinct products. Whole milk mozzarella is around 22 to 25 percent fat. Part-skim is 12 to 18 percent fat. The fat content drives the browning and the stretch.
Whole milk low-moisture mozzarella is the pizzeria-grade cheese. It browns evenly, stretches dramatically, and has a richer flavor. Most premium pizza brands (Galbani Whole Milk, Polly-O Whole Milk, Grande) are in this category.
Part-skim low-moisture mozzarella is the supermarket default for shredded bags and most string cheese. It is less expensive, slightly chewier when melted, and produces a less impressive browning. Acceptable for casual home pizza, less satisfying for serious pizza-making.
For home pizza, buying a whole milk low-moisture block and shredding it yourself produces noticeably better results than the supermarket part-skim shredded bag.
Buffalo mozzarella
Mozzarella di bufala is fresh mozzarella made from water buffalo milk rather than cow milk. The traditional product comes from Campania in southern Italy and carries a DOP designation. Buffalo milk has roughly twice the butterfat of cow milk (around 8 percent vs 4 percent) and almost twice the protein, which translates into a richer, denser, creamier cheese.
The signature buffalo mozzarella experience is the tear: cut a fresh buffalo mozzarella ball and the inside releases a milky, slightly viscous liquid called latte di mozzarella. This is the defining sign of a quality product. A buffalo mozzarella that cuts cleanly without releasing liquid is past its peak or was made with too low a fat starting milk.
For Caprese salad and direct eating, buffalo mozzarella is clearly superior to cow mozzarella for those who can taste the difference and are willing to pay the premium ($12 to $20 per pound for imported DOP product versus $6 to $9 for cow fresh mozzarella).
For cooked applications, buffalo mozzarella is generally a waste. The high fat content and delicate flavor are buried under tomato sauce and heat. Cow fresh mozzarella delivers similar cooking results at half the price.
Burrata
Burrata is mozzarella by technique but a different cheese by experience. The outside is a thin shell of mozzarella. The inside is filled with stracciatella, which is shredded mozzarella mixed with cream. When cut open, the cream and curds spill out.
Burrata is fragile and short-shelf-life. The cream filling spoils faster than the outer shell, and a burrata more than 5 days from production starts to taste sour. Buy from a fishmonger or specialty store with high turnover.
Use burrata for direct consumption with seasonal vegetables, fresh tomatoes, grilled bread, or as a centerpiece of a composed salad. Heating burrata is generally a mistake. The cream filling either tightens up or leaks out, and the dramatic visual that justifies the price is lost.
Pre-shredded versus block
Pre-shredded mozzarella is convenient and consistent but melts worse than fresh-shredded block cheese. The anti-caking agents (cellulose powder, potato starch, sometimes natamycin) coat the shreds and prevent them from fusing into the smooth molten cheese that defines great pizza.
If you cook pizza or baked pasta more than once a month, buy a block of whole milk low-moisture mozzarella and shred it on a box grater. The work takes 2 to 3 minutes per pound. The cheese cost is roughly 20 to 30 percent lower than pre-shredded. The melting result is dramatically better.
The block keeps unopened for 4 to 6 weeks in the fridge. Once opened, wrap tightly in plastic and use within 2 to 3 weeks. Mold on the surface can be cut off with a half-inch margin if the rest of the cheese smells and looks normal.
Storage and shopping notes
Fresh mozzarella: keep submerged in its liquid until use. If using only part of a ball, return the remainder to the liquid. Discard within 5 to 7 days of opening. Never freeze fresh mozzarella (the texture turns to chalky mush).
Low-moisture block: refrigerate in the original wrapper. After opening, wrap tightly and use within 3 weeks. Freezing is possible but not ideal (texture suffers slightly, melting is fine).
Pre-shredded: use within 7 to 10 days of opening for best melt quality. Older shredded cheese melts even worse than fresh-from-the-bag.
See our methodology page for the cheese testing framework, and the pizza dough hydration guide for the complementary half of the home pizza equation.
Frequently asked questions
Why does fresh mozzarella turn pizza watery?+
Fresh mozzarella is 50 to 60 percent water by weight, compared to 45 to 50 percent for low-moisture mozzarella. On a 12-minute home oven pizza, that water releases as the cheese heats, pooling on the surface and never fully evaporating. The fix is to slice the fresh mozzarella, salt it lightly, and rest it on paper towels for 20 to 30 minutes before topping. This pulls out 1 to 2 tablespoons of liquid per ball and prevents the soup-on-pizza problem.
Is buffalo mozzarella worth the price difference?+
For Caprese salad and direct eating, yes. Buffalo milk has roughly twice the butterfat of cow milk, which makes buffalo mozzarella richer, creamier, and more complex in flavor. The texture is silkier and the inside is wetter (the famous mozzarella tear that releases milky liquid). For cooked applications where the cheese melts into a sauce or onto pizza, the buffalo character is largely lost and cow mozzarella is the smarter spend.
Can I use fresh mozzarella on pizza if I prefer the flavor?+
Yes, with two adjustments. First, dry the cheese as described above (salt and rest on paper towels). Second, place it on the pizza for only the last 3 to 4 minutes of baking rather than for the whole bake, ideally by removing the pizza when the crust is nearly done and adding the cheese for a final minute under the broiler. This keeps the cheese intact and prevents it from breaking down into a watery puddle.
Why does pre-shredded mozzarella melt differently than block?+
Pre-shredded mozzarella is dusted with cellulose powder, potato starch, or natamycin as an anti-caking agent. The coating prevents the strands from sticking in the bag but also interferes with melting. The shreds melt later, fuse together more reluctantly, and brown unevenly. Buying a block of low-moisture mozzarella and shredding it fresh gives a noticeably better melt. The block keeps for 3 to 4 weeks unopened in the fridge.
How long does fresh mozzarella last after opening?+
Fresh mozzarella in its packing liquid lasts 5 to 7 days after opening if kept submerged and refrigerated. Once removed from the liquid and exposed to air, the surface dries and sours within 24 to 48 hours. Always keep fresh mozzarella covered in its own brine or in salted cold water. Discard if the liquid turns cloudy yellow or the cheese develops any pink, gray, or fuzzy spots.
