How much yeast for pizza dough? Doses for 8 to 72 hours
As a percentage of the flour, using instant yeast: about 0.1% for an 8-hour rise at 68–72 °F, 0.02–0.03% for 24 hours at room temperature. For a cold ferment at 37–39 °F: 0.1–0.13% for 24 hours, 0.07–0.1% for 48 hours, 0.05–0.07% for 72 hours. On 10 lb of flour, 0.1% is about 1½ teaspoons. Using fresh (cake) yeast, multiply by three. Aim for dough at 73–77 °F when it leaves the mixer.
How much yeast for your ferment?
| Ferment | Instant (IDY) | On 10 lb flour | Fresh / cake | Typical use |
|---|---|---|---|---|
| 6 h at 68–72 °F | ≈ 0.2% | ≈ 3 tsp | 0.5–0.6% | Mix in the morning, bake at night |
| 8 h at 68–72 °F | ≈ 0.1% | ≈ 1½ tsp | ≈ 0.3% | Same-day dough |
| 12 h at 68–72 °F | 0.05–0.07% | ¾–1 tsp | 0.15–0.2% | Mixed the night before |
| 24 h at 68–72 °F | 0.02–0.03% | ⅓–½ tsp | 0.05–0.1% | Room-temperature Neapolitan |
| 24 h cold, 37–39 °F | 0.1–0.13% | 1½–2 tsp | 0.3–0.4% | Next-day dough |
| 48 h cold, 37–39 °F | 0.07–0.1% | 1–1½ tsp | 0.2–0.3% | The pizzeria standard |
| 72 h cold, 37–39 °F | 0.05–0.07% | ¾–1 tsp | 0.15–0.2% | Long ferment, lighter crust |
Teaspoons are level measures of instant yeast, rounded. Weigh once and write the weight on your batch sheet.
For cold-fermented dough, give the bulk 1–2 hours at room temperature first, then ball and put the boxes in the walk-in; the times above include that bulk. One practical consequence: a standard ¼-ounce packet of instant yeast is enough for 15–20 lb of flour on a 48-hour cold ferment. If a home recipe tells you one packet per pound of flour, that is a two-hour dough, not yours.
Most American pizzerias work with instant dry yeast — SAF, Fleischmann’s, Red Star — in one-pound vacuum bricks, because it keeps and it is consistent. Fresh cake yeast is hard to find retail; foodservice and bakery distributors carry it by the block. Both work; instant is simply easier to keep consistent.
Why time and temperature matter more than the recipe
Yeast does not read recipes. It responds to warmth and time, and fermentation roughly doubles in speed for every 15 °F. A walk-in running at 43 °F instead of 39 °F adds the equivalent of several hours of fermentation over a 72-hour ferment. Two rules cover most of what you need:
- Double the time, roughly halve the yeast. It is a heuristic that holds between about 8 and 72 hours, less well at the extremes.
- Seasons change the dose. A kitchen at 66 °F in January and 85 °F in August is two different bakeries. One professional on a French pizza forum halves his fresh yeast in summer for the same room-temperature ferment.
This is also why people argue about yeast online. Training sheets give doses by room temperature, while forum regulars quote one number. Both are right; they are answering different time-and-temperature combinations. For reference, the EU Pizza Napoletana specification uses about 0.17% fresh yeast on the flour for a 6–8 hour rise at 77 °F.
Fresh, instant or active dry: the conversions
| To replace 1 part fresh (cake) yeast | Amount | How to use it |
|---|---|---|
| Instant dry yeast (SAF, Fleischmann’s, Red Star) | ⅓ part | Straight into the flour |
| Active dry (larger granules) | 0.4–0.5 part | Rehydrate about 10 min in warm water, as the packet says |
- Instant = fresh ÷ 3. Lesaffre puts SAF-Instant at around a third to 40% of the fresh weight. Do not dissolve it; mix it through the flour.
- Measure tiny doses properly. Below about a tenth of an ounce, a kitchen scale is a lottery. Use a precision pocket scale, or level teaspoons from the table above checked against a weighed batch.
- Check freshness. Cake yeast keeps a few weeks in the cooler. An opened block three weeks old may be nearly dead, and the flour gets the blame. Keep opened instant yeast airtight in the cooler too.
- Keep salt off the yeast. Dissolve the salt in the water or add it late in mixing.
Control the dough temperature, not just the yeast
The same dose gives two different doughs depending on whether the dough leaves the mixer at 68 °F or 81 °F. Target a final dough temperature of 73–77 °F, nearer 73 °F for a three-day ferment: the longer the ferment, the cooler the dough should be. Check it with a probe every batch.
Working out the water temperature
American bakers use the desired-dough-temperature formula: water = (3 × desired dough temp) − flour temp − room temp − friction factor. The friction factor is how much your mixer heats the dough, typically somewhere around 20–30 °F on a spiral and more on a long planetary mix. For dough at 75 °F, flour at 70 °F, a 72 °F kitchen and a friction factor of 26, the water goes in at 57 °F. Calibrate the friction factor by measuring: one pizzaiolo whose dough kept coming out at 66–68 °F instead of 73 °F, with pale rims, recalculated it and the problem went away. In summer, use ice water or weighed ice.
Adjusting when it goes wrong
- Balls spread and merge in the box: too much yeast or the cooler is too warm. Cut the yeast by 20–30% and check the cooler with a probe thermometer; displays can be out by a couple of degrees.
- Tight dough, blisters, pale rim after 48 hours: under-fermented. A little more yeast, a warmer dough off the mixer, or a longer warm-up out of the walk-in: 90 minutes minimum, not 30.
- Dough behaves differently every day: almost always the dough temperature moving, not the yeast. Write it on the production sheet.
Sticky dough, pale rims, tearing: the full diagnosis
Planning a 48-hour dough around service
In a pizzeria the real yeast question is how many balls to mix 48 hours before Saturday. A simple schedule for a 7 p.m. service:
- Thursday 3 p.m.: mix with 0.07–0.1% instant yeast, dough at 73–75 °F.
- Thursday 5 p.m.: ball and into the walk-in at 37–39 °F, no more than about ten balls per box so they chill quickly.
- Saturday 3–4:30 p.m.: out of the walk-in for 1.5–4 hours depending on the kitchen, until relaxed and around 61–64 °F in the core.
Leftover balls can go into the next day’s service, or become old dough: about 10% of yesterday’s dough worked into today’s mix, with slightly less yeast.
Work out the yeast for 40 balls on a 48-hour cold ferment
Storing dough balls: cooler, boxes and freezing
FAQ
How much yeast for a 48-hour cold ferment?
About 0.07–0.1% instant yeast on the flour (0.2–0.3% fresh) — 1 to 1½ teaspoons per 10 lb of flour — with balls at 37–39 °F and dough at 73–77 °F off the mixer. If the balls spread, go lower; if they are tight after 48 hours, go higher.
How do I convert fresh yeast to instant?
Divide fresh by 3 for instant yeast, which goes straight into the flour. Divide by about 2–2.5 for active dry yeast, which is traditionally rehydrated in warm water first.
Can I use the same yeast for 24 and 72 hours?
No. A longer ferment needs less yeast and a cooler dough. Roughly, doubling the time means halving the yeast.
How long should dough balls come out before service?
Usually 1.5–4 hours depending on the room, until they relax and reach about 61–64 °F in the middle. Thirty minutes is nearly always too short.