(batsek, meaning "swelling," i.e., in fermentation). The dough the Israelites had prepared for baking was carried away by them out of Egypt in their kneading-troughs (Ex 12:34,39). In the process of baking, the dough had to be turned (Ho 7:8).
And the people took their dough before it was leavened; their kneading-troughs bound up in their clothes upon their shoulders.
And they baked the dough that they brought forth out of Egypt into unleavened cakes, for it was not leavened; for they were driven out of Egypt, and could not wait; neither had they prepared for themselves any food.
Ephraim, he mixeth himself with the peoples; Ephraim is a cake not turned.