What Is a Calzone? Calzone vs Pizza, Stromboli and Panzerotti
What is a calzone? A calzone is an Italian folded pizza. A round of pizza dough is filled on one half, folded over into a half-moon, sealed at the edge and baked in the oven. Classic fillings are cheeses such as mozzarella and ricotta with cured meats like salami or ham, and the tomato sauce usually comes on the side for dipping.
At a glance
- Foldeda calzone is a pizza folded in half and sealed
- Napleswhere it began, in the 18th century
- "Trouser leg"what the Italian word calzone means
- Bakeda fried folded pizza is a panzerotto instead
On this page
You'll find a calzone on the menu at almost every UK pizzeria, usually sitting quietly between the margheritas and the pasta. It looks like a giant golden pasty, and if you've never ordered one it's fair to wonder what is a calzone, exactly, and whether it's just a pizza in disguise. This guide explains where calzones come from, what goes inside, how a calzone pizza differs from an open pizza, a stromboli and a panzerotto, and how to get the same flavours if you're eating low-carb.
What is a calzone?
A calzone is an oven-baked folded pizza from Italy. Wikipedia describes a typical calzone as salted bread dough stuffed with prosciutto or salami, mozzarella or ricotta, and Parmesan or pecorino, sometimes with an egg, then baked in the oven.
The method is simple. You stretch a round of pizza dough, pile the filling on one half, fold the other half over and crimp the edges so nothing leaks out. The result is a half-moon or crescent shape. Bon Appétit compares it to a taco: a calzone is always folded, never rolled. Inside, the cheese melts and the filling steams in its own pocket of dough, while the outside bakes golden and crisp.
The Italian restaurant chain Prezzo traces the calzone to 18th-century Naples, where it was a hand-held version of pizza that people could carry and eat on the go. In Italy, sandwich-sized calzones are still sold at lunch counters and by street vendors for exactly that reason.
| Calzone | |
|---|---|
| Origin | Naples, Italy |
| Dough | Pizza or bread dough |
| Shape | Half-moon, sealed |
| Cooked | Baked in the oven |
| Cheese | Ricotta, mozzarella |
| Sauce | Usually on the side |
| Size | Usually one person |
Based on Wikipedia's Calzone entry, Bon Appétit's calzone and stromboli guide and Prezzo's What is Calzone? article. Checked 31 October 2026.
What does calzone mean?
Calzone is the Italian word for "trouser leg" or "stocking", and the plural is calzoni. The name is usually explained by the shape: a filled pocket of dough that looks a little like a folded piece of fabric. Prezzo gives the Italian pronunciation as "kahl-TSOH-neh", while most people in the UK say something closer to "kal-TSOH-nee" or "kal-ZOH-nee". Any of these will get you a calzone in a British pizzeria.
What's inside a calzone?
The traditional calzone is a cheese-led bake. Wikipedia's list of classic ingredients is short:
- Cheese: mozzarella or ricotta, plus a hard cheese such as Parmesan or pecorino.
- Cured meat: prosciutto (Italian ham) or salami.
- Egg: sometimes added to the filling.
Ricotta is the signature. Bon Appétit says calzones usually use a blend of cheeses that almost always includes ricotta, which keeps the inside soft and creamy. Regional versions add other familiar pizza toppings such as mushrooms, spinach, peppers or ham, and many UK menus offer a vegetarian calzone too.
Why the sauce goes on the side
Tomato sauce is wet, and a lot of liquid sealed inside dough turns into steam that can make the base soggy or split the seam. That's why Wikipedia notes that calzones typically don't have tomato sauce inside, and Bon Appétit says they're dipped instead. Some pizzerias do add a spoonful inside, but a classic calzone keeps the filling fairly dry and serves a bowl of tomato sauce alongside.
Keep the filling dry and leave a clear border of dough around the edge. Drain wet ingredients like mushrooms or spinach first, and press the edges together firmly so the seam stays shut in the oven.
Calzone vs pizza: what's the difference?
A calzone is a type of pizza, made from the same dough and often the same toppings. The difference is how it's put together. A pizza is open, with the toppings baked on top of a flat base. A calzone is closed, so the filling bakes inside the dough.
| Calzone | Pizza | |
|---|---|---|
| Shape | Folded, sealed | Flat, open |
| Toppings | Inside | On top |
| Tomato sauce | On the side | On the base |
| Cheese | Often ricotta | Usually mozzarella |
| Texture | Soft, steamy inside | Crisp, browned top |
| Eaten | Cut or by hand | In slices |
General differences; recipes vary between pizzerias.
Because the filling is sealed in, a calzone often holds more cheese and meat than a slice of pizza, and it stays hot for longer. You also need more dough for the same width, since the base folds over to become the lid. That matters if you're counting carbs, which we cover below.
Calzone vs stromboli and panzerotti
Two other stuffed pizzas are often mixed up with the calzone. Here's how to tell them apart.
Stromboli
A stromboli is Italian-American rather than Italian. According to Wikipedia, it was created in the Philadelphia area in the mid-20th century, and Romano's pizzeria in Essington, Pennsylvania, says it first used the name in 1950, after the film Stromboli. Instead of a circle folded in half, a stromboli starts as a rectangle of dough that's topped and rolled up into a long log, like a Swiss roll. Bon Appétit says it's sliced to share, usually uses low-moisture mozzarella rather than ricotta, and can have some tomato sauce rolled inside.
Panzerotti
Panzerotti (panzerotto in the singular) come from Apulia, the region in the heel of Italy's boot. They look like small calzones and use a similar dough, but they're fried rather than baked. Wikipedia says the name comes from "panza", a regional word for belly, because the dough swells as it fries. The most common filling is tomato and mozzarella, and the tomatoes are drained well first, because too much moisture can tear the dough.
| Calzone | Stromboli | Panzerotto | |
|---|---|---|---|
| From | Naples | Philadelphia | Apulia |
| Shape | Half-moon | Rolled log | Small half-moon |
| Cooked | Baked | Baked | Fried |
| Serves | One | Several | One |
Based on Wikipedia's Calzone, Stromboli and Panzerotti entries and Bon Appétit. Checked 31 October 2026.
Are calzones high in carbs?
A traditional calzone is made with wheat-flour pizza dough, and flour is the main source of carbohydrate. Because the dough is folded over to make a lid, a calzone uses roughly a whole pizza round for one person, so it's a carb-heavy meal. The fillings are a different story: cheeses such as mozzarella and Parmesan and cured meats like salami and ham contain very little carbohydrate.
So if you're eating low-carb, the dough is the part to swap, not the filling. Our guide to keto takeaway options in the UK covers what to order from a pizzeria when you're out, and why the base is usually the problem.
Calzone-style ideas for low-carb eating
Classic calzone flavours are easy to keep. Folding a low-carb dough is the hard part, because doughs made from nut flours don't have the stretch that gluten gives wheat dough. These are the ways we'd get the same ricotta, mozzarella and salami flavours at home:
- Shape your own base: our Keto Pizza Base Mix is made with almond flour, milled linseed, psyllium husk powder, whey powder, coconut flour and Italian seasoning. You add eggs and water, mix, shape the dough and bake at 180°C, with no kneading or rising. It makes one or two bases. It's designed as an open pizza base, so pile calzone fillings on top rather than folding it.
- A ready-made base: our Low Carb Pizza Base is handmade by a family bakery in Puglia and crisps up in the oven in 5 to 6 minutes. It's already baked, so it won't fold, but ricotta, mozzarella and salami with a pot of tomato sauce for dipping gives you a quick, open calzone-style pizza.
- A folded wrap: our Low Carb Keto Wraps are about 20 to 22cm across and soft enough to fold without cracking. Spread one half with ricotta, add mozzarella and ham, fold it into a half-moon and toast it in a dry pan, quesadilla-style.
For a full method, follow our keto margherita pizza recipe and swap in calzone fillings. If you want to know more about the flours in the mix, see our guide to almond flour vs ground almonds, and for more ideas with wraps, read can you eat wraps on keto?
Carb figures are as shown on each product page. Free delivery on orders over £30.
The Keto Pizza Base Mix contains nuts (almonds) and milk, and you add eggs. The Low Carb Pizza Base and Low Carb Keto Wraps contain gluten (wheat) and may contain soy and mustard. Always check the pack for full allergen information.
Key takeaways
- A calzone is a folded pizza. Dough is filled, folded into a half-moon, sealed and baked.
- Ricotta is the classic filling. It's usually paired with mozzarella and cured meats, with sauce on the side.
- Stromboli and panzerotti are cousins. A stromboli is rolled and sliced; a panzerotto is small and fried.
- For low-carb, swap the dough. The cheese and meat filling is low in carbs; the wheat dough isn't.
Frequently asked questions
What is the difference between a calzone and a pizza?
A calzone is a pizza that's folded in half and sealed before baking, so the fillings cook inside the dough. A pizza is open, with toppings baked on a flat base. Calzones usually use ricotta with mozzarella, and the tomato sauce is often served on the side for dipping rather than spread inside.
What is the difference between a calzone and a stromboli?
A calzone is a round of dough folded into a half-moon and crimped, usually one per person. A stromboli is an Italian-American bake from the Philadelphia area: a rectangle of dough is topped, rolled into a long log and sliced to share. Stromboli usually skips ricotta and can have tomato sauce inside.
What is the difference between a calzone and a panzerotto?
Both are folded pizzas made with similar dough, but a calzone is baked in the oven and a panzerotto is fried. Panzerotti come from Apulia in southern Italy and are smaller, usually filled with drained tomato and mozzarella. Calzones come from Naples and are bigger, with ricotta, mozzarella and cured meats.
What does calzone mean in Italian?
Calzone means "trouser leg" or "stocking" in Italian, and the plural is calzoni. The name is usually linked to its shape, a filled pocket of folded dough. In Italian it's pronounced roughly "kahl-TSOH-neh", though in the UK you'll often hear "kal-TSOH-nee" or "kal-ZOH-nee" instead.
Can you eat a calzone on keto?
A traditional calzone isn't low-carb, because the folded wheat dough is mostly flour. The usual fillings of cheese and cured meat are low in carbs, though, so the trick is to swap the dough. A low-carb pizza base topped with calzone fillings, or a folded low-carb wrap, gives you similar flavours.
Sources
- Wikipedia. Calzone (definition, traditional fillings, meaning, sauce and street-food versions), Stromboli (origin and shape) and Panzerotti (Apulia, frying, name and fillings). Checked 31 October 2026.
- Bon Appétit. What is the difference between a calzone and a stromboli? (sealing, cheese, sauce and serving size). Checked 31 October 2026.
- Prezzo. What is Calzone? (Naples origin, 18th century and pronunciation). Checked 31 October 2026.
- Groovy Keto product pages: Keto Pizza Base Mix (ingredients, method and allergens), Low Carb Pizza Base (nutrition, cooking time and allergens) and Low Carb Keto Wraps (size, carbs per wrap and allergens). Checked 31 October 2026.
