Dough Temperature and Resting Time

The same recipe turns out differently in the morning and the afternoon; it works fine in winter, then sticks to the machine as soon as summer arrives. Often the recipe is not wrong; the dough temperature and resting time are simply not being managed.

What Happens When Dough Is Too Warm

As the temperature rises, dough becomes softer and stickier, and the gluten relaxes more. The effects on machine production are direct:

• Sticking to the machine and belts: The surface gets tacky, and the hopper and conveyor need constant cleaning.
• Shapes do not hold: Once softened, the seal tends to sag.
• Fermented dough runs too fast: Yeast is highly active in a warm environment, so the dough keeps growing while still in the hopper, and buns made earlier and later come out in different sizes.
• Unstable weight: Dough density changes with fermentation, so divided weights drift accordingly.

While the machine is running, the dough also warms slightly from friction in the hopper and during feeding, and the longer continuous production runs, the more noticeable this becomes.

What Happens When Dough Is Too Cold

If the temperature is too low, the dough is firm with poor extensibility, and the wrapper cannot stretch during encrusting and tends to crack; the seal is also harder to close. Fermented dough that is too cold ferments slowly, dragging down output.

How Long Should Dough Rest Before Going on the Machine?

Resting lets the gluten that was pulled tight during mixing relax. Freshly mixed dough is very elastic, and if it goes straight onto the machine, it tends to shrink back and come out uneven in thickness; rested dough stretches more easily.

There is no fixed answer to how long to rest; it depends on the type of dough, its temperature, and the product:

• Unfermented dough (dumpling wrappers): The point is to relax the gluten and distribute the water evenly; rest until the surface is smooth and the dough does not shrink back when stretched.
• Fermented dough (steamed buns and mantou): Resting and fermentation go hand in hand, and it should be decided together with whether you wrap first and ferment later or ferment first and then wrap; see What to Watch When Running Fermented Dough on a Machine.
• While resting, cover the dough or keep it in a lidded container to keep the surface from drying out and forming a skin; dry skin rolled into the machine causes torn wrappers and uneven thickness.

Should You Adjust Between Summer and Winter?

Yes. Common practices:

1. Control dough temperature with water temperature: Use cold or even ice water in summer, and room-temperature or slightly warm water in winter, so the mixed dough falls within a fixed temperature range.
2. Measure and record: Measure the dough temperature with a thermometer and write it into your production records. Once you find the temperature at which your product is most stable, make it your target.
3. Shorten time in the hopper: In summer, load small amounts at a time and top up in batches, so the dough does not sit on the machine too long.
4. Watch the work environment: When the work area is hot, refrigerated fillings also release water once taken out; for filling temperature, see Filling Temperature: Why Fillings Are Often Chilled Before Going on the Machine.

Water amount and temperature change together, so when adjusting, see also How Dough Water Content Affects Machine Production. For the dough condition suited to each model, call Dong-Yih at 06-257-4644.

FAQ

Q: What happens when dough is too warm?
A: It becomes sticky and soft and tends to stick to the machine and slump; fermented dough keeps fermenting on the machine, so size and weight are unstable.

Q: Can dough go on the machine right after mixing?
A: It usually needs to rest to let the gluten relax; going straight onto the machine tends to cause shrink-back and uneven thickness.

Q: What should I do if dough keeps sticking to the machine in summer?
A: First lower the dough temperature with cold or ice water, load small amounts at a time, and shorten the time the dough sits in the hopper.

Q: How long should dough rest?
A: It varies with dough type and temperature; the rule is to rest until the surface is smooth and the dough does not shrink back when stretched, and fermented dough should be timed with the whole fermentation process.