75 years later, Thanksgiving staple Jiffy corn muffin mix still costs less than $1

75 years later, Thanksgiving staple Jiffy corn muffin mix still costs less than $1

Jiffy corn muffins have been an American family dinner staple for 75 years.(Chelsea Milling Company)The distinctive blue and white packaging for Jiffy corn muffin mix may seem charmingly dated, a throwback to pantries of decades past. Splashy rebrands are not the company's style, said Howard S. Holmes II, president and CEO of Chelsea Milling Company, which has been making the mix for 75 years. But the box has, in fact, been subtly tweaked over t…