Both cheeses are mozzarella, but they’re built for different bakes. The difference is mostly water. Fresh mozzarella carries more of it, and the longer a pizza bakes, the more that shows: fresh cheese that holds its shape in a 90-second bake runs and pools in a 10-minute one.
The difference at a glance
| Fresh mozzarella | Low-moisture mozzarella | |
|---|---|---|
| Water | Usually about 60%; US standard 52–60% | 45–52% (US standard) |
| Sold as | Balls or logs, in water or vacuum-sealed | Firm blocks and loaves in airtight plastic |
| On pizza | Soft pools of cheese; needs eating within minutes | Even, stretchy layer that browns and stays soft |
| Keeps | Short: go by the date, and use within days of opening | Weeks in the fridge |
| Best for | Neapolitan-style, fast bakes | New York, pan and bar pizzas, long bakes |
The water figures come from the US standards of identity: “mozzarella” must contain more than 52% and no more than 60% water, and “low-moisture mozzarella” more than 45% and no more than 52%. America’s Test Kitchen puts fresh mozzarella at usually about 60%. Italian cheeses can run wetter: the specification for Mozzarella di Bufala Campana allows up to 65%.
Fresh mozzarella made from cow’s milk is technically fior di latte, though, as Modernist Pizza notes, US labels usually just say mozzarella. Mozzarella di bufala is made from water buffalo milk. Ken Forkish describes bufala as richer and more acidic than fior di latte, and wetter, so it can make for a watery pizza.
What the water does in the oven
Melting cheese soaks up a lot of heat. Modernist Pizza explains that the cheese’s temperature stalls while it melts, and the dough underneath can’t cook through until the cheese has finished melting. Mozzarella also gets whiter as it cooks, so it absorbs less of the oven’s radiant heat as the bake goes on.
Time is what turns water into a problem. Forkish explains that in a home oven the cheese spends longer above its melting point, so brine-packed fior di latte liquefies. The same cheese in a wood-fired oven holds much of its shape, because the pizza is out before the cheese has had time to break down.
That’s the whole decision. The longer your bake, the more you want low-moisture cheese, or the later you want fresh cheese to go on.
By oven
Portable pizza ovens (Ooni, Gozney and similar). A Neapolitan-style pizza bakes in 1 to 2 minutes on a stone at 750–850°F (400–450°C). Fresh mozzarella can go on at the start, torn or sliced, with no special treatment beyond patting it dry.
Home oven with a steel or stone. At the oven’s top setting, usually 500–550°F (260–288°C), a Neapolitan-style pizza takes 6 to 10 minutes and a New York pizza 8 to 12. Low-moisture mozzarella goes on from the start. Fresh mozzarella needs help: drain it, then add it partway through. Forkish’s home Neapolitan recipes bake about 7 minutes in total and add the cheese about 4 minutes in. The two-stage bake works the same way.
Pan pizzas. A Detroit pizza bakes for 22 to 26 minutes at 500°F (260°C), and a Sicilian for 25 to 32 at 450°F (232°C). That’s far too long for wet cheese on top, so these styles use low-moisture mozzarella or brick cheese. Forkish notes one exception: on a pan pizza with the sauce on top, fresh mozzarella underneath holds its heat and gooeyness longer.
By style
| Style | Cheese | Why |
|---|---|---|
| Neapolitan in a portable oven | Fresh mozzarella, fior di latte or bufala | Short bake; soft, milky pools are the point |
| Neapolitan-style in a home oven | Fresh, drained and added about 4 minutes in; or low-moisture | Longer bake liquefies fresh cheese |
| New York | Low-moisture whole-milk, grated; or thin slices of vacuum-sealed fresh | Even melt, browning, holds up as slices cool |
| Detroit | Wisconsin brick, or low-moisture mozzarella with white cheddar | Fatty cheese against the pan wall makes the crisp edge |
| Sicilian and grandma | Low-moisture; fresh works under sauce | Long pan bake |
| Bar pizza | Low-moisture with a little white cheddar and pecorino | Thin, crisp, cheesy to the edge |
The bar pizza blend is from Adam Kuban’s recipe in Forkish’s The Elements of Pizza: 135 g of low-moisture whole-milk mozzarella, 55 g of mild white cheddar and 25 g of pecorino on a 12-inch pie. The Detroit substitute is from King Arthur Baking’s weeknight Detroit pizza, which calls for brick cheese and suggests low-moisture mozzarella, with optional cheddar, if you can’t find it.
Using fresh mozzarella in a home oven
- Cut it ahead and drain it. Slice or tear the cheese into pieces, spread them on a rack or a towel-lined plate, and refrigerate them uncovered for a few hours or overnight. Pat the pieces dry before they go on. Forkish suggests squeezing bufala a little and patting it down before baking.
- Weigh it, if you want to know. Weigh the cheese before and after draining. The loss is water. For scale, an 8-ounce (227 g) ball at 60% water that gives up 25 g has dropped to about 55% (calculated). Draining won’t turn fresh mozzarella into low-moisture cheese, but it does remove the loose water that would otherwise pool on the pizza.
- Add it partway through the bake. Bake the pizza with sauce first, then add the cheese about 4 minutes in and finish the bake.
- Eat it straight away. Forkish gives fresh mozzarella pizzas about a 10-minute window before the cheese firms up and loses its stretch.
Fresh mozzarella in vacuum-sealed packs, rather than packed in water, is a useful middle ground. Galbani describes its sealed 8-ounce ball as slightly firmer and saltier than its traditional water-packed fresh mozzarella (checked October 14, 2026). Forkish recommends plastic-wrapped fresh mozzarella, sliced, for New York pizzas in the style of Patsy’s: it’s whiter than low-moisture cheese and doesn’t brown as fast. Brand-by-brand details are in fresh mozzarella brands for pizza.
Using low-moisture mozzarella
Buy whole milk. Under the US standards, whole-milk mozzarella has at least 45% milkfat in its solids, and part-skim 30 to 45%. Forkish says whole-milk low-moisture mozzarella melts and tastes much better than low-fat versions. It also holds its melted, stretchy state for a long time, which is why a boxed American pizza is still good well after it’s baked. (For leftovers, see how to reheat pizza.)
Grate it from a block. Bagged shreds are coated with an anticaking agent, usually potato starch and powdered cellulose, and many bags are part-skim. Forkish and most pizza books say to grate your own. America’s Test Kitchen found the gap smaller than its reputation, though: tasted plain, the bagged shreds were gritty, but melted on pizza the bagged and block versions of the same brand came out close. What’s left is fat content, since many bags are part-skim, and price: Forkish notes that the shredded cheese costs more.
Look for a whiter cheese if yours browns too fast. Forkish found that some brands brown much faster than others, and that yellower low-moisture mozzarella is usually older and saltier.
Put hard cheese underneath. A little grated pecorino, Parmigiano-Reggiano or Grana Padano under the mozzarella adds salt and flavor, and under the mozzarella it’s protected from scorching.
One test for any cheese
Forkish’s goal for the cheese on Roman, New York, pan and bar pizzas is “fully melted but not burned, with no oil separation.” If the cheese breaks into orange pools of fat, it has had too much heat for too long, so add it later next time. If it’s still wet, the cheese was too wet for the bake. For the rest of the cheese choices by style, see the best cheese for pizza, and for assembly order, how to build a pizza.
Sources
- Ken Forkish, The Elements of Pizza (2016), chapter 2 (pizza styles and their cheese goals), chapter 4 (mozzarella, fresh and low-moisture, bufala, hard cheeses) and chapter 7 (recipe notes and quantities, including Adam Kuban’s bar pizza).
- Nathan Myhrvold and Francisco Migoya, Modernist Pizza (2021), volume 1, page 14 (fior di latte and the name mozzarella) and pages 372–373 (how cheese melts and reflects heat during baking).
- US Code of Federal Regulations, 21 CFR 133.155, 133.156 and 133.158: standards of identity for mozzarella, low-moisture mozzarella and low-moisture part-skim mozzarella.
- Consorzio Tutela Mozzarella di Bufala Campana DOP: product specification (maximum moisture).
- America’s Test Kitchen, “All About Mozzarella” (2024) and its shredded mozzarella tasting: fresh mozzarella moisture and bagged against block cheese.
- King Arthur Baking, Weeknight Detroit pizza: cheese and substitutes.
- Galbani: Fresh Mozzarella Ball product page (checked October 14, 2026).
- Bake temperatures and times are the site’s Planner values for each style and oven.