You can freeze basil well and make it last longer, for example if you have harvested too much of it. Find out here what you should consider.
Basil is used both in the kitchen and as a medicinal herb. The nutrient-rich and aromatic leaves give numerous dishes a typical aroma. To have basil on hand all year round, you can freeze it. We’ll tell you how this works best.
Freezing fresh basil: This is how it works

If you want to freeze the basil leaves in their actual form, you should blanch them. That way they won’t be mushy after defrosting. For this you need:
ice cubes
a bowl
a cooking pot
water
a clean kitchen towel
a plate
a container for freezing
In order for the basil to retain its aroma when you freeze it, you must first blanch it. Proceed as follows:
Cut the leaves off the plant. Preferably directly above the leaf node, where more leaves grow, because this allows new ones to grow back.
wash the leaves
Place the ice cubes in the bowl.
Boil water in a saucepan. Make sure the pot is big enough for all the basil leaves.
Blanch the basil leaves in hot water for about 5 to 10 seconds. This means: Dip the leaves in the boiling water for five to ten seconds at a time, preferably with a slotted spoon.
Then, as quickly as possible, dip each leaf into the ice water.
Then place the basil leaves individually on a clean kitchen towel and let them dry for about ten minutes.
Place the individual basil leaves on a plate. Make sure the leaves are really individual on the plate so they don’t stick together when frozen.
Place the plate in the freezer until the leaves are completely frozen.
Now you can put them together in a sealable container, such as a lunch box or an empty screw-top jar.
Put these in the freezer.
How to freeze pureed basil

You can also freeze basil pureed and use it later for cooking. How it works:
Remove the stems from the basil leaves.
Rinse the leaves under cold water.
Drain the basil well and then gently pat dry.
Once the leaves have dried, place them in a food processor or blender.
Chop the basil depending on how coarse you want the leaves to be.
Add some olive oil as you go.
Once the basil leaves have reached the desired consistency, place them in a sealable container.
Basil can be stored in the freezer for several months.