Most of the time you can buy ‘romaine hearts’ from the store. However, if you’ve bought whole romaine heads and aren’t sure what the ‘heart’ is - don’t fear. If you remove the outer leaves of the lettuce, you’ll notice the leaves begin to lighten in color and become more tightly packed together. This is the ‘heart.’  If you’re starting with whole romaine, you can even use the outer leaves to whip up a fresh salad alongside the grilled romaine hearts, so your family/ guests have multiple options to choose from!