Our Rabbis taught: You discharge [your obligation] with fine bread, with coarse bread, and with Syrian cakes shaped in figures; although [the Sages] said, ‘Syrian cakes shaped in figures must not be made on Passover.’
So you can eat Syrian cakes if they’re made – you just can’t make them! Why? Glad you asked:
Rab Judah said: This thing Boethus b. Zonin asked the Sages: Why was it said [that] Syrian cakes shaped in figures must not be made on Passover? Said they to him: Because a woman would tarry over it and cause it to turn leaven. [But], he objected, it is possible to make it in a mold, which would form it without delay. Then it shall be said, replied they, [that] all Syrian cakes [shaped in figures] are forbidden, but the Syrian cakes of Boethus are permitted!
R. Jose said: One may make Syrian cakes like wafers, but one may not make Syrian cakes like rolls. We learned elsewhere: Sponge cakes, honey cakes, paste-balls, cakes made in a mold, and mixed dough are exempt from hallah (the obligation to set aside or burn a portion of the dough).
And therefore, one would assume, are not really “bread.” The text goes on to describe breads made in a stew pot called an ilpes. These might be placed in the sun to bake. And the dough might be placed into a mold to form a shape. Maybe this is professional bakers, maybe home-based.
There is more discussion – but it’s all making me too hungry!