1,102. Dough Stuck in a Kneading Trough

Chometz u’Matzah 2:15

Let’s say that block of a leavening agent was designated for sitting on. If its surface was mortared over, it is destroyed and one may retain it over Passover. If dough in the cracks of a kneading trough is the volume of an olive in one place, it (the dough) must be destroyed. Smaller than that, if the dough reinforces broken parts of the trough or plugs a hole in it, it is nullified in this small volume, otherwise it must be destroyed. If there is dough in two places, each half the volume of an olive, and a strand of dough connects them, then we must see if these pieces of dough are raised when the strand is lifted. If they are, they must be destroyed, otherwise one need not destroy them.

Chometz u’Matzah 2:16

The parameters above only apply to dough that is stuck to a kneading trough. Dough in a house must be destroyed even when lifting the strand of dough doesn’t raise the pieces. This is required in a house because such pieces are sometimes brought together, forming an olive-sized volume. Let’s say that half an olive in volume was found in a house and another half was in the loft, or if half an olive in volume was found in a house and another half was on the porch, or if half an olive in volume was found in an outer room and another half was in an inner room. In all of these cases, since pieces of dough that are smaller in volume than an olive are stuck to the walls, beams or floors, there is no need to destroy them; it is sufficient for one to nullify them in his heart.