The real reason the price of margarine has skyrocketed (Tasting Table) 

Tasting Table published an article stating that many products and commodities are seeing lower prices, down from their highest highs, however, senior research fellow Joseph Glauber says he doesn’t see food prices overall going down anytime soon. “It [prices] still seems to be increasing. Fruits and vegetables are up about 8 percent, dairy products are up 13 and a half percent, and meat and poultry, and fish are up about 12 percent. We’ve had really strong food inflation across the board over the last six months or so.”