The most expensive item in your grocery cart is the one you discard before you ever get the chance to eat it. Many shoppers are drawn to large-format packages, specialty produce, or bulk buys, only to find that significant portions of these items go bad before they can be consumed. When you throw away half of what you buy, you are effectively doubling the cost of every single serving you do manage to eat. I will examine six common grocery items that frequently become expensive liabilities due to food waste.