The caramel coloring in your favorite soda is once again being scrutinized by the FDA. According to NBC News, the FDA is taking another look into the chemical 4-MeI, a carcinogenic byproduct produced in the manufacturing of caramel color, after a Consumer Reports test found higher than expected levels in sodas across the country. Consumer Reports partnered with the Johns Hopkins Center for a Livable Future to test samples of various soda brands, including Pepsi, Coke, and Malta Goya, in California and New York for 4-MeI levels twice over the course of 2013. However in the second test, soda samples from New York had reduced levels of 4-MeI — a can of Pepsi from the New York area averaged 174 micrograms in the first test and only 32 micrograms in the second. Pepsi and Malta Goya had higher levels of 4-MeI in its sodas, but in the second test, Pepsi did bring that number down significantly as it promised to do in 2013.