Some thoughts about "Schlissel Challah" (Really)

From Jewish History with Rabbi Dr. Dovid Katz by R Dr. Dovid Katz.

The Talmudic metaphor of מַפְתֵּחוֹת בְּיָדָיו שֶׁל הַקָּדוֹשׁ בָּרוּךְ הוּא and its culinary application in 18th century Hasidic Practice