Troubleshooting · symptom → cause → fix
No bubbles in the rim
The rim comes out even and smooth, without the big air pockets and spots you see on Neapolitan pizza.
Most likely cause
The dough hasn't finished proofing
How you know: The balls are compact and spring back instantly when you press them.
Do this: Give the dough more time at room temperature before baking.
Other possible causes
-
Hydration too low for the heat
- How to tell
- The dough is firm and dry, for example below 60 % in a hot pizza oven.
- Fix
- Try 63–65 % in a pizza oven. In a home oven lower hydration often works better – there, heat is the limiting factor.
-
The gas was pressed out of the rim
- How to tell
- You pressed the whole dough flat or used a rolling pin.
- Fix
- Leave the rim untouched when stretching.
-
Not enough heat from above
- How to tell
- The rim turns an even light brown instead of spotted.
- Fix
- More heat from above: a higher temperature, the grill element towards the end, or a higher shelf position.
Quick answer: bubbles need three things at once: a fully proofed dough, enough water in the dough and fierce heat. If one is missing, the rim comes out smooth.
The nerdy explanation
The bubbles are gas pockets from fermentation that inflate when the gas expands and the water turns to steam in the oven. A well-fermented dough has lots of irregular pockets, and a wetter dough produces more steam. High heat means the expansion happens before the surface sets.
See fermentation, hydration and leoparding. More problems are in the troubleshooting section.
Frequently asked questions
Are bubbles a goal in themselves?
No, but they're a sign that the dough is well fermented and has met intense heat. A good rim can be airy even without big bubbles.
Why do the spots turn black?
Small black spots – leoparding – are thin bubbles that char quickly in very high heat. They're part of the Neapolitan style and not a fault in themselves.