Bread crumbs

Bread crumbs start as already-fermented bread, and the bread used is often not fresh — leftover or stored cooked foods are generally considered higher concern than freshly prepared ones.

• Aged base ingredient — the bread used to make crumbs is rarely fresh, and stored cooked foods are well-established as accumulating more histamine over time than freshly made equivalents

• Additives — many commercial bread crumbs include yeast extract, spices, or seasoning blends that can add to the overall histamine load

Plain, homemade crumbs from fresh bread are typically a gentler choice than seasoned store-bought versions.