In Jewish law and tradition, leavened products or anything containing grain fermentation that is forbidden during the Passover holiday.
From Hebrew 'hametz,' derived from the root meaning 'to leaven' or 'to ferment,' referring to the leavening process that makes bread rise and is symbolically connected to sin and spiritual impurity in Jewish tradition.
During Passover, Jewish families undertake an intensive search for hametz before the holiday begins—some families still use feathers and candles to find crumbs in every corner, maintaining an ancient cleaning ritual that connects them to thousands of years of Jewish practice!
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