One of the easiest ways to preserve basil is to freeze the basil leaves. You can pour the purée in ice cubes trays freeze them and transfer the cubes to re sealable plastic bags where they keep for up to a year.
Clean dry ready to roll.
How do you keep basil fresh. Then dry the leaves completely and spread them out on a baking sheet or tray. Loosely cover it with a plastic bag and leave it on the counter. You can also try blanching them.
If you want to store fresh basil for longer start by pulling all of the leaves off the stems. Refrigeration can turn the leaves black. To store fresh basil that you plan on cooking with soon just rest it in a glass of water so the stems are submerged and set it somewhere away from direct sunlight.
To keep basil fresh trim the stems and place them in a glass or jar of water just like cut flowers. Remove basil leaves from the stem and toss them in a pot with boiling water for 3 5 seconds. See how to blanch for details and then whirl it in a blender with just a bit of olive oil.
Quickly blanch the basil in boiling salt water for 15 seconds drain it and dunk it into ice water to cool it quickly this sets the green color. Store the basil leaves like salad greens. Pick wash and dry the leaves then store in the fridge wrapped in a dry paper towel and sealed in a plastic bag.
You can simply freeze the whole basil leaves or chop them and store them in a container or freezer bag but keep in mind that they might shrink a little. This baggie will be the basil s home for the next several days. For the greenest freshest seeming basil.
Although certain herbs such as parsley and cilantro can be stored this way in the fridge basil does better at room temperature.