how to save basil
1 Puree: Use a food processor to puree the fresh basil leaves with olive oil. 2  Use 1 tablespoon of olive oil per 1 cup of basil. 3  Freeze: Freeze the pureed basil in an ice cube tray, then store in a large resealable plastic bag or freezer-safe container.uree and freeze fresh basil in these 3 easy steps: 1  Prep: Remove the basil leaves from the stem, then wash and dry completely. 2  Puree: Use a food processor to puree the fresh basil leaves with olive oil. 3  Use 1 tablespoon of olive oil per 1 cup of basil.