Was ist der Unterschied zwischen Rühren und Unterheben!?

During stirring, you go “horizontal” in circular movements.

When underlifting, a light mass (e.g. egg snow) is added to a heavy mass on top of it and you proceed vertically. So clean from above with the snow broom and then lift the heavy mass up, and so often until easily and heavyly mixed.

In the case of particularly sensitive masses, it is even made that the masses are mixed only by knocking on the edge of the bowl “through the snow broom” (cotton cake mass, for example), whereby the structure of the light mass is least destroyed.

This is usually done with particularly delicate and light masses, where the dough loosening is only physical. (Through blow enclosed air)