How to tell when a pizza is done

Short answer

Judge structure, not colour alone. A done pizza has a rim that feels set and springs back rather than squashing doughy, an underside that is coloured and holds its shape when you lift an edge, cheese that is fully melted (and browned only if the style intends it), and no pale, gummy, raw-looking layer directly under the sauce when you tear a slice open. That raw layer — a gum line — is a fault in every style; a soft, wet-looking centre on a Neapolitan pizza is not, because the style is meant to be tender in the middle. For packaged not-ready-to-eat pizza and reheated leftovers, a food thermometer is the safety check (see the food-safety notes); for ordinary dough, it is not a useful doneness test.

Why colour alone misleads

Browning tracks surface temperature and sugar, not how cooked the inside is. A very hot oven can brown or char a rim in a minute while the layer under a heavy, wet topping is still raw; a cooler oven, a low-sugar dough or a pale flour can leave a fully baked crust looking blond. The edge always colours before the centre, so a good-looking rim tells you little about the middle of the base.

US food-safety guidance makes the same point about food generally: colour is not a reliable indicator that something is cooked (see the food-safety notes, which also show where UK guidance differs). For pizza dough the practical answer is to check structure — how the crust feels, lifts and tears — and to use colour as one cue among several.

The signs, part by part

Rim (cornicione or edge): it should feel set and hollow-light rather than heavy and squashy, and spring back when pressed. In a high-heat oven, dark spots and some leopard-spotting are normal; a uniformly black, bitter rim is burning, not char.

Underside: lift an edge with a peel, spatula or tongs and look towards the centre, not just the rim. A done base is coloured (from pale gold to spotted dark, depending on the oven and style), holds roughly flat or droops only as the style intends, and is not white, shiny or tacky. Oven makers suggest lifting to check the base partway through a fast bake and turning the pizza if one side is colouring faster. A crisp sound when tapped is a good sign for styles meant to be crisp.

Centre structure: the area under the sauce should look like cooked crumb — opaque, set, with visible structure — not a translucent, gluey band. That band is the gum line, usually caused by cold or very wet toppings, too heavy a load, or a baking surface that was not hot enough, because a pizza on a deck or stone bakes largely from the bottom up.

Cheese: fully melted and bubbling, with browning only where the style calls for it — a caramelised, almost crunchy cheese edge is the point of a Detroit pan pizza, whereas a Neapolitan margherita's fior di latte is usually melted rather than browned. Oil pooling heavily usually means the cheese has gone past its best, not that it is more cooked.

Sauce: it should look slightly reduced and have lost its raw, sharp edge where exposed; sauce that is still watery and pooling often goes with a gum line underneath.

Toppings: raw vegetables should have softened at least at the edges, pepperoni should have rendered (and cupped, if it is that kind), and anything raw that was meant to cook — sausage, for example — needs to be cooked through, not just browned on top. Toppings added after the bake, such as basil, rocket or cured ham, are not meant to be cooked.

Pan pizza interior (Detroit, Sicilian, grandma): the thick crumb should be set and springy, not dense and wet in the middle. Lift a corner to check that the fried underside has coloured, and expect the centre of the pan to finish last.

Style differences: intended softness versus a fault

Some styles are meant to be soft. A Neapolitan pizza has a thin, tender, almost custardy centre carrying sauce and fior di latte, and it is served whole and often eaten with a knife and fork or folded (a portafoglio) partly because the centre will not hold rigid. That wet look is intended. What is not intended in any style is dough that is still raw — sticky, translucent and gummy when torn — under the sauce.

Other styles are meant to be crisp or sturdy. A New York slice should fold lengthwise without collapsing and have a crisp outer layer; tavern-style and other cracker-thin pizzas should be crisp edge to edge; Detroit and Sicilian should have a fried, crisp bottom under an airy crumb. For these, a floppy, pale base is usually underbaking rather than style.

Tactile checks that beat looking

The lift test: slide a peel, spatula or tongs under an edge and lift. Look at the colour towards the centre of the base and see how it behaves — a stiff, crisp style should stay fairly flat; a soft style may droop but should not tear or stick.

The tear or cross-section test: tear or cut a slice from the middle and look at the layer directly under the sauce. Cooked crumb tears cleanly and looks opaque; a gum line is a pale, wet, sticky band that strings or smears. Pizza trade writers note that a cut edge with toppings pushed over it can mimic a gum line, so tearing gives a fairer view than looking at a knife cut.

If the rim and base are done but the centre is not, the fix is usually for next time — lighter or less wet toppings, a hotter surface, a longer preheat — rather than leaving the pizza in until the edges burn. The troubleshooting pages linked below cover each pattern.

When a thermometer is the right tool

A thermometer is the right tool for two pizza situations, and both are about safety rather than texture: packaged pizzas that are not ready to eat (some look cooked but are not), and leftovers being reheated. The food-safety notes below give what official bodies ask for.

For ordinary home-made or freshly baked dough, a probe thermometer is not a useful doneness test: a thin crust is hard to probe meaningfully, and the readings tell you less than the lift and tear checks do. PizzaHQ does not give a dough-doneness temperature.

Common misconceptions

“If the crust is brown, the pizza is cooked.”

Browning is a surface signal. A heavily topped or wet centre can still be raw under a well-coloured rim, and a pale dough can be fully baked. Check the underside and tear a slice from the middle.

“A wet-looking Neapolitan centre means the pizza is undercooked.”

A soft, tender centre is part of the style. A fault is dough that is still raw — sticky and translucent — under the sauce, which is a gum line in any style.

“Stick a thermometer in the dough to see if it is done.”

For ordinary dough, structure checks are more useful than a probe reading. A thermometer matters for safety with packaged not-ready-to-eat products and reheated leftovers.

What this page cannot tell you

PizzaHQ has not tested these methods or ranked any pizzeria, chain or product. Visual and tactile cues vary with oven, dough, flour and topping load, so they are signs to weigh together rather than a pass/fail test. This page cannot tell whether a packaged product is safe to eat: follow the pack and the food-safety notes.

Related

Evidence

• The Dreaded “Gumline” — Scott's Pizza Tours
• Knead to Know: Dough Doctor Tom Lehmann talks gum line — What causes it and what to do about it — Pizza Today
• Tools & Techniques to Check Pizza Bottom Cooking Level — Alfa Forni
• International Regulation for True Neapolitan Pizza (Disciplinare Internazionale) — Associazione Verace Pizza Napoletana (AVPN)
• Modernist Pizza — The Cooking Lab