How to Select and Store Lettuce
When shopping for lettuce, look for compact and crisp leaves with no discolouration. Avoid purchasing heads of lettuce that have wilted leaves, blemishes or have oxidization around the stem or outer leaves.
Unfortunately, lettuce is one of the most commonly wasted foods because people don’t know how to store it properly, or they forget about it in their fridge.
Lettuce will last longer in your fridge if stored properly. Also, if you clean and prepare your lettuce as soon as you bring it home, you will be more likely to eat it because it will be ready to enjoy whenever you want it.
Separate the leaves, removing and discarding the core (if there is one). Then place the leaves into a sink or bowl of cold water. Swish the leaves around to dislodge any dirt of grit that may be caught in between the leaves. Lift the lettuce out of the water and shake gently to remove excess water. Drain the lettuce, then use paper towel, or a salad spinner, to remove all traces of moisture before storing. Place clean, dry, lettuce in an airtight plastic bag with a sheet of paper towel (to help absorb moisture), and store in the fridge for up to a week.
Lettuce is best enjoyed fresh, so it is not recommended to freeze lettuce.