How to store fresh basil for longer: 3 easy and no waste hacks Tired of wasting your basil after a few days? Don't worry, we have 3 perfect hacks for you! 1. In a jar Remove it from the plastic packaging and place it in a jar full of water. Store it in a cool and dry place and remember to change water every 3 days to make it last longer. 2. In the fridge Wash and dry basil leaves. Place them on a paper towel and roll them up! Store them in a food bag in the fridge up to 10 days. 3. Olive oil cub