00, bread flour, semolina: which when

Walk into any pizza discussion online and you'll find someone insisting that authentic Neapolitan pizza requires Italian 00 flour, while someone else swears by bread flour for everything. They're both right, and they're both wrong. The flour you choose matters enormously, but not because of nationalism or tradition—it matters because of physics.

Two things define how a flour behaves in pizza dough: protein content and how finely it's milled. Protein becomes gluten when you add water and knead, creating the stretchy network that traps gas and gives your crust structure. More protein means more potential gluten, which means chewier, stronger dough that can handle longer fermentation. The fineness of the grind affects hydration and texture—finer flours absorb water differently and create silkier doughs.

When 00 flour makes sense

00 flour is milled incredibly fine, almost powdery. The designation refers to how finely it's ground, not its protein content—though most 00 flours sold for pizza clock in around 11-12.5% protein, which is moderate. This combination of fine grind and moderate protein creates an extensible dough that stretches easily without fighting back. That's exactly what you want when you're hand-stretching a Neapolitan pizza that will bake in 90 seconds at 900°F.

The fine grind also means 00 flour hydrates quickly and creates a smooth, soft dough that's genuinely pleasant to work with. If you're baking in an Ooni or a similar backyard oven that hits Neapolitan temperatures, 00 flour is your friend. It browns beautifully in short bakes and produces that characteristic tender-chewy texture with leopard spotting.

But here's where people get it wrong: 00 flour isn't magic, and it's not necessary for good pizza. It's optimized for a specific style.

When bread flour wins

Bread flour typically runs 12.5-14% protein, and it's ground coarser than 00. That higher protein content builds a stronger gluten network that can handle longer, cooler fermentation—the kind that develops complex flavor. It also creates chewier texture and more structural integrity.

This makes bread flour ideal for New York-style pizza, where you want foldable slices with some tooth to them. It's perfect for Detroit-style, where the dough needs enough strength to support a heavy load of toppings and develop crispy edges during a longer bake. Even for home oven pizzas at 500-550°F, bread flour often outperforms 00 because the longer bake time benefits from that extra structure.

Bread flour also costs less and you can find good options at any grocery store. King Arthur and other domestic brands are excellent. You're not compromising—you're matching the flour to your method.

The coarser grind means bread flour takes slightly longer to hydrate fully. Mix your dough and let it rest for 20 minutes before kneading, and you'll get better gluten development with less work.

What about semolina?

Semolina deserves a separate conversation because it's fundamentally different. Milled from durum wheat, semolina is coarse, high in protein, and golden in color. Some recipes call for adding semolina to pizza dough, and while you can do this, it's not where semolina shines for pizza.

Semolina's real value is as a dusting flour. Its coarse grind means it doesn't absorb into the dough as readily as regular flour, so it stays granular on your peel and work surface. This creates tiny ball bearings that help your pizza slide off the peel cleanly. It also adds a subtle crunch and toasty flavor to the bottom of the crust.

Use semolina on your peel, not in your dough, and you'll wonder how you ever launched pizzas without it.

The real answer

Stop thinking about flour choice as right versus wrong. Think about matching flour to your process. Fast, hot Neapolitan bakes in a backyard oven? 00 flour gives you easy stretching and quick browning. Longer bakes in a home oven or styles that need structure? Bread flour builds the strength you need. And keep semolina around for a clean launch every time.

Choose your flour based on your oven and your style, not on what sounds most authentic.