Ochratoxin A is a toxin and potentially carcinogenic and can be found in a variety of foods like dry raisins and tea.
Ochratoxin Aa toxin produced by different Aspergillus and Penicillium species  is one of the most-abundant food-contaminating mycotoxins. Ochratoxin A is potentially carcinogenic to humans (Group 2B), and has been shown to be weakly mutagenic, possibly by induction of oxidative DNA damage. Concentrations of ochratoxin in usual foods Raisins dry Ginseng Pig liver Paprika Nutmeg Ginger Liquorice extract Pig kidney Liquorice confectionery Coffee Cereals Peanuts Wine Pulses Salami Beer Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured or fresh leaves of the Camellia sinensis, an evergreen shrub native to East Asia. 
