Published Spring 2015
The Torah forbids a Jew to own chometz on Pesach . In order to dissuade people from owning chometz on Pesach , there is a rabbinic injunction not to eat or benefit after Pesach from chometz which was owned by a Jew during Pesach . Such chometz is known as chometz sheovar olov haPesach , and it remains forbidden permanently.1
For this reason, one should not buy chometz from a Jewish-owned store immediately after Pesach , unless the owner sold all chometz that he owned before Pesach to a non-Jew for the duration of Pesach , and did not acquire any further chometz during Pesach . The laws of mechiras chometz (selling chometz to a gentile for Pesach ) are complex, therefore the sale must be made by a competent rabbi or kashrus authority.
If a Jewish-owned store did not sell its chometz […]