Nan Chiao found the new problem products in its own testing and filed 84 additional downstream distribution records with authorities, the United Daily News reported, bringing related records to 146 and affected outlets to nearly one hundred.

The scandal began when benzo(a)pyrene, a carcinogen, was found above limits in Chung Lien soybean salad oil. The tainted feedstock went into seven Nan Chiao reprocessed oil products, which Taipei's health department earlier traced to 62 city businesses.

Famous chains and hotels on the list

The downstream roster features household names — Pang Lao Die, Cashbox, Holiday KTV, Chun Yueh pork ribs, the PX Mart chain and five-star hotels. Businesses have begun recalls and stopped using the products.

Taipei's health authority fined Nan Chiao NT$3 million for failing to report the excessive benzo(a)pyrene findings as required by the food safety act.

Memories of 2014

Taiwan's food-safety confidence was battered by the 2014 gutter-oil scandal, and critics say this episode again exposes gaps in feedstock management and reporting. Authorities are widening inspections.

For oil-intensive businesses — including Chinese-run restaurants in Korea — this is no distant story. The fallout could grow depending on where Taiwan's trace-back investigation finds the contamination began.