METALS Acid foods or beverages are prepared or stored in equipment containing toxic metals; The metals dissolve in the foods; x Produce fast-acting gastrointestinal symptoms; *The salts of metals irritate the gastric mucosa. Acid foods or beverages are prepared or stored in equipment containing toxic metals;  The metals dissolve in the foods;  Produce fast-acting gastrointestinal symptoms;  The salts of metals irritate the gastric mucosa