Deal out all the cards, so that each player has the same number of cards. Players do not look at their cards, but keep them in a pile face down. The object of the game is to win all the cards.
Decide who goes first. That player turns their top card face up and chooses an item on the food label that they think is higher than their opponents card. Whoever has the higher value takes both cards and adds them (face down) to the bottom of their packet. Then both players turn up their next card and so on. Whoever won the previous round gets to choose the next food label item.
If the value on both cards are equal then both players must play the same item on the next card in their hand. This continues until there is a winner.
The game is over when one player holds all of the cards.