Wikimedia Commons Last year, General Mills launched a new product aimed at health-conscious customers: Cheerios Protein, a version of its popular cereal made with whole-grain oats and lentils. Early reviews were favorable. The cereal, Huffington Post reported, tasted mostly like regular Cheerios, although “it seemed like they were sweetened and flavored a little more aggressively.” Meanwhile, ads boasted that the cereal would offer “long-lasting energy” as opposed to a sugar crash.