When bread is made by bread machine in winter, the amount of dry yeast in the ingredients should still be cut according to the proportion of the original formula, and there is no need to increase the amount. The reason for this is the following：

1, in the fermentation stage of bread machine, the working temperature in the machine is controlled by microcomputer program, and the temperature is kept between 35~38 degrees, which creates a suitable environment for dough fermentation;

2. In this process, the electric heater inside the bread maker cooperates with the corresponding temperature sensor, and under the control of the microcomputer, the constant temperature environment is maintained, so that the dough can fully complete the fermentation task in more than one hour.

3. Whether it is summer or winter, the temperature in the bread machine is not affected by external environmental factors. Because its temperature control circuit can automatically adjust the on-off interval of the heater in the machine according to the signal level captured by the temperature sensor, it can maintain and ensure the normal temperature needed for dough fermentation.