Bongkrekic acid, or BA, is a highly toxic compound that inhibits the enzyme ADP/ATP translocase, the enzyme that exchanges ATP and ADP across the mitochondrial membrane. The toxin is preformed in the food. It is said to be an issue in fermented coconut fiber and corn flour. "Bongkrekic acid production depends on two distinct and sequential environmental conditions: those that support bacterial growth and proliferation, followed by those that favor BA production .Bongkrekic acid is produced in warm environments (22–30 °C) with a neutral pH, the same conditions under which tempe is made. Production is also dependent on the presence of fatty acids, particularly those found in coconut and corn"
A similar foodborne illness outbreak occurred in 2015 in Mozambique when after consuming pombe, a traditional alcoholic beverage product, during a funeral event, 230 became sick and 75 died, In this case, the provider of the pombe used corn flour that had previously gotten wet.
Newsweek
https://www.newsweek.com/family-members-die-homemade-noodles-1541320?amp=1
9 Family Members Die After Eating Year-Old Homemade Noodles
