zwieback

Now, however, he manages his th's perfectly, and I don't think he had Zwieback in his mouth when he talked with me.

Having failed to find him in his cabin, he was bringing him his zwieback and large peasant cup of tea on deck.

Zwieback, zvī′bak, n. biscuit rusk, or a sweet spiced bread toasted.

Perhaps you will allow me to offer you some of our zwieback, put in Miss Campbell, stretching forth her hand for the box.