Did you ever notice that when you buy some of your produce, there is a sticker on it that has a barcode and a number?
Those stickers are called the Price Lookup (PLU). The barcode is for the price and the number, either 4 or 5 digits, tells you much more! These numbers are very important to understand because they tell you how the produce was grown.
Check out this video which describes each number and what they tell you about the fruit you are about to consume!