At least for kosher I'm aware that rabbis inspect and approve the manufacturing facility and process directly. This is doubly true for items labeled "Kosher for

At least for kosher I'm aware that rabbis inspect and approve the manufacturing facility and process directly. This is doubly true for items labeled "Kosher for Passover". https://oukosher.org/passover/articles/what-is-kosher-for-passover/ https://oukosher.org/passover/articles/what-is-kosher-for-pa...