A great dispute has raged among poskim ever since the invention of matza-baking machines. The dispute centers on two principal questions: 1) Is there indeed no concern that machine-made matzot may become ḥametz? 2) Can one use them to fulfill the mitzva of eating matza on the Seder night?
Concerning the question of ḥametz, it is agreed that everything depends on the nature of the machine and on its supervision. As long as there are kashrut supervisors who ensure that there is no risk of ḥametz, the matzot are kosher for Pesaḥ. Thus even the most pious and God-fearing Jews eat machine-made matzot on Pesaḥ.
The second question, however, is still debated. Some say that the mitzva of guarding the matza requires that the entire process of kneading and baking be done with explicit intent that they are le-shem matzat mitzva, and since a machine cannot have intentions, one would not fulfill the mitzva of eating matza on the Seder night with machine-made matza.
Most poskim maintain that one can fulfill the mitzva by eating machine-made matzot, for several reasons. Firstly, as we learned, some maintain that the mitzva of guarding the matza only requires one to ensure that it does not become ḥametz, and it is irrelevant whether this is done while making the matza by hand or by supervising the activity of a machine (based on Ra’ah). Furthermore, a human being operates the machine, and if he operates it with the intent of making matzat mitzva, then automatically all of the machine’s operations are considered to have been done for the sake of the mitzva.
In practice, one may use machine-made matza to fulfill the mitzva of eating matza on the Seder night. Many are scrupulous to fulfill the mitzva with handmade matzot that were baked under good supervision, but it is not necessary to eat handmade matzot throughout the Seder meal. Rather, scrupulous fulfillment entails eating handmade matza for those kezayit quantities that constitute the mitzva (see below 16:22-25).
I wrote that using handmade matza constitutes a more scrupulous form of observance based on my father’s explanation. Many things have changed in recent decades. Machines are more automated than ever, so there are more grounds for concern that no specific action was done for the sake of the mitzva. Perhaps in the past, when more human input was necessary to operate the machinery, this problem was less of a concern, but today the machines operate at the touch of a button. Moreover, when all of the matza was handmade, there was a concern that the pressure to supply matza to the entire nation meant that matza bakers would not be sufficiently meticulous in their efforts to keep the matza from becoming ḥametz. The machines were a great solution to that issue. Nowadays, on the other hand, most handmade matza factories are extraordinarily scrupulous, to the point that the situation may have been reversed, and there is less concern about handmade matza becoming ḥametz than there is about machine-made matza. Even though there is a consensus that the intent of the machine operator or the kashrut supervisor is sufficient, having the proper intent throughout the process (as is the case with handmade matza) enhances the mitzva. This is especially true if one bakes his own matza, since it is always better for one to fulfill a mitzva on his own rather than through an agent (this is indeed my father’s custom – to bake his own matzot mitzva).