Step.2 You don’t want any excess moisture, but because of pesticides that were used to prevent the vegetable from being eaten by bugs and other chemicals that were used to preserve it, you may want to wash the lettuce with salt or vinegar.
Instructions…
Place the leaves in a colander then sprinkle with white vinegar. This should be done over the sink to avoid spills. Run the tap cold water until all the leaves are washed. After you are through with washing, place the leaves on a sheet of paper towel to drip dry. Excess water will decay the lettuce fast.
Salt...The same process can be done using a sprinkle of salt over the plant and then rinsing with running water. Do not soak the vegetable as this could cause sogging.
Packaging Process
The packaging process is very simple. All that’s needed is a dry Ziploc bag or a mason jar. Any of the two can be used as a storage container as they are able to be sealed tightly. Packing this green leafy vegetable for storage in paper bags or plastic wraps can result in early spoilage.
 The Best Place For Storage
Where you store your vegetables in the fridge is very crucial to how long they last including lettuce. My suggestion is, on the top shelf of the door, a crisper drawer or the second shelf inside the fridge. Why is this so, you may ask?
Avoid Freezing…
We are trying to prevent moisture, so placing it on the top shelf of the fridge will be too cold therefore causing freezing and that leads to sogging.
The upper shelf of the fridge door is the ideal place as it is not too cold and also not too warm. Here, your lettuce should be going for weeks without losing its taste and its crunchiness.
Lettuce Heads
For lettuce heads, you don’t need to wash or pull the leaves apart. Simply store them in a freezer bag and store them in the crisper. Regularly check the stem while storing as this part seem to not withstand storage very well. If the stem looks slimy and or moist simply slice that slimy area off and continue storing.
Tip: Whether it’s ahead of lettuce or loose-leaf lettuce storage is crucial. As long as the lettuce is kept dry and stored in the proper area in the fridge everything should be fine. Another thing to keep in mind is to (check on the lettuce at least once weekly and change the paper towel as necessary
How to Keep Bagels Fresh For Months
Nothing beat a fresh spongy bagel, but that is only when it is freshly baked. What if you could buy your fresh soft bagel and still keep it fresh for months? Good news! this is possible…
Conclusion:
The trick to keeping lettuce for a month is simple as you can see. All you need is the correct temperature and proper storage containers and your lettuce will stay fresh for longer.