What are the little black specks occasionally found in my “JIFFY” Corn Muffin Mix?

The black specks are simply naturally dark pieces of the pericarp (skin) of the corn, where the tip of the kernel attaches to the cob. The color of the specks will vary by crop and year. They are the same as those commonly seen in hard taco shells, corn or tortilla chips, cornmeal, and natural whole corn products.