The spicy oil of BT roasted wings is actually pepper essence, which is equivalent to saccharin and vinegar essence!
I checked the ingredients. have
Character crimson viscous liquid capsaicin content 1.0%~ 10.0% soluble oil-soluble or water-soluble arsenic (mg/kg) ≤4 heavy metals (in terms of lead) (mg/kg) ≤30 lead (mg/kg) ≤3 mercury (mg/kg) ≤ 0.0/kloc-.