How to Freeze and Preserve Herbs in Olive Oil

By Juliette Perry

Preserving herbs in olive oil has become one of the hot culinary topics this summer that is being tried and tested amongst the food industry. Being a foodie myself, I was intrigued to give this kitchen trick a go and suss out what it was all about.

Step by step guide

1. Choose firm, fresh herbs (wash and dry the herbs, if necessary)

2. Chop the herbs or leave whole

3. Fill the ice cube trays about 3/4 of the way full with the fresh herbs

4. Pour olive oil over the top of the herbs

5. Label, as you will have a hard time identifying or recalling the herbs or blends once frozen

6. Place the trays into the freezer and freeze overnight

7. Once frozen, remove the cubes from the trays and place in labelled, plastic bags Place back in the freezer until you are ready to use

Tips and Tricks

Use tougher hard herbs such as rosemary, sage, thyme, and oregano

Soft herbs such as mint, basil, tarragon, and dill don't respond as well to this kind of preserving (however these herbs work well chopped and blended with butter and frozen)

Mix different herb combinations together to create your own blends

Experiment with different oils such as coconut oil or melted butter

The benefits of preserving herbs in oil

Reduces some of the browning and freezer burn that herbs can get in the freezer

Convenience of having herbs ready immediately for winter stews, roasts and soups

Adds a depth of flavour to dishes

Cost effective

Reduces waste


I have to admit it was just as simple as they say it would be to make, plus the flavour it carries in dishes is definitely noticeable. I am almost looking forward to the evenings drawing in so I can put these cubes to good use.

Learn more about preserving your herbs this summer, such as herb butter or vinegar and visit to begin putting your ice trays to better use. 

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