Pizza comes out smaller than intended

What you're seeing

You stretched the disc to the edge of your 30 cm peel, dressed it, launched it — and what came out is nearer 26 cm, with a thick rim and a small sauced middle. The base is denser and breadier than you wanted, because the same weight of dough is now spread over less area. And if you watched carefully, you could see it happen: the disc crept inward while it sat on the peel, before it ever touched the stone.

The short answer

Nothing shrinks in the oven. What you are seeing is elastic recoil — a gluten network that is still tensioned pulling the disc back in during the minute between stretching and launching. Rest the dough until it stops rebounding, then deliberately overshoot: stretch 10–15% wider than your target diameter so that what settles on the peel is the size you actually wanted.

Why it happens

Recoil is stored force, not lost dough

Gluten is elastic because glutenin forms long cross-linked chains that behave like springs. When you stretch a disc you are loading those springs; the bonds do not break, they hold the force. Let go and they give it back, and the disc contracts. Left alone under no load, the same bonds slowly rearrange into a new, unstressed arrangement — stress relaxation — which is why the fix is a timer and not stronger hands. If the dough is fighting you hard enough that you cannot open it at all, that is the more severe version of the same problem, covered in dough that won't stretch.

The important detail is when the recoil happens. A well-rested dough relaxes most of the load within seconds and then holds. An under-rested one keeps contracting for a minute or more — exactly the window in which you are spooning on sauce and scattering cheese, so you never see it until the pizza is on the board.

Cold dough is stiff dough, and it recoils harder

Straight from a 4 °C (39 °F) fridge the network is both stiffer and much slower to relax. A 250 g ball needs roughly 90 minutes on the counter for the centre — not just the surface — to reach around 18 °C (64 °F). Pull it out twenty minutes before you bake and you are stretching a ball that is still cold in the middle, and the middle is precisely where the disc pulls back from.

Flour strength sets the ceiling on all of this. Caputo Pizzeria, the red bag, sits around W260–280 at roughly 12.5% protein and is built for an 8–24 hour ferment; Caputo Chef's, the blue bag, runs W300–320 at about 13% and is built for 24–72 hours. Use the strong blue bag on a same-day timeline and you get all the elasticity and none of the softening — a disc that behaves like a rubber band however patiently you press it.

The ball was never big enough for the pizza you wanted

Half the time this is not recoil at all: the dough was portioned for a smaller pizza. Diameter and dough weight do not scale together, because area grows with the square of the diameter. A 250 g ball opens comfortably to 30 cm, which is about 0.35 g of dough per square centimetre. Go up to 35 cm and the area rises from roughly 707 cm² to 962 cm² — you need about 340 g to keep the same thickness, not the 290 g that scaling by diameter alone would suggest.

Run it the other way and you can see the cost of the shrink itself. Losing 30 cm down to 26 cm cuts the area by a quarter, so the same 250 g of dough ends up about a third thicker than planned. That is very often the real reason a base comes out dense and bready — it was never over-proofed or under-kneaded, it was just baked at the wrong thickness. The dough calculator will size the balls for the diameter you are actually making.

Fix it now

1. Stop and let it rest. Cover the ball — a lidded container or an upturned bowl, never an open bench where a skin forms — and give it 20 minutes at room temperature, or 60–120 from the fridge.
2. Test before you commit. Press a fingertip 1 cm into the ball. If the dent fills back in almost completely, it is still tensioned. If it fills in slowly and partially, it is ready.
3. Stretch in stages. Open to 20 cm, wait two minutes, then open to full size. Two short stretches beat one long fight: you are letting the network relax between loads.
4. Overshoot on purpose. For a 30 cm target, stretch to 33–34.5 cm. That is the 10–15% you are going to give back, and building it in is easier than fighting for it.
5. Dress fast. The disc keeps contracting on the peel, so have the sauce and cheese ready before the dough goes down. Sixty seconds from peel to oven.
6. Weigh the ball before you blame the stretch. If it is under 250 g and you are aiming at 30 cm, no amount of technique will get you there without a base too thin to carry toppings.
7. Do not reach for the rolling pin. It holds the diameter and crushes the gas cells that make a cornicione — you trade a small pizza for a flat one.

Prevent it next time

• Weigh every ball on a scale. Divide by weight, not by eye: 250 g for 30 cm, about 340 g for 35 cm, so every pizza in a batch bakes the same.
• Ball 24–48 hours ahead and cold ferment. Long, cool rest lets the network relax while flavour develops, and a well-fermented ball opens far more willingly.
• Take the dough out 90 minutes before you bake — on the counter when you switch the oven on.
• Match flour strength to your timeline. W260–280 for 8–24 hours, W300–320 for 24–72. A flour stronger than the schedule you are running will recoil every time.
• Ball gently. Over-tightening at shaping loads the network hours before you touch it.
• Mark your peel. A pencil line at 30 cm turns "about right" into a measurement.
• Judge by the sauced area, not the total. A classic margherita wants a 2 cm rim; if your rim has crept out to 4 cm, the disc recoiled from the middle and the dressing pushed it back further still.