Grape-Nuts is a brand of breakfast cereal made from flour, salt and dried yeast, developed in 1897 by C. W. Post, a former patient and later competitor of the 19th-century breakfast food innovator Dr. John Harvey Kellogg. From Wikipedia
Sesame Street's puppet wrangler, Lara MacLean, bakes the 'barely edible' cookies using pancake mix, puffed rice, Grape-Nuts, instant coffee, and colored hot glue.
