Write an article based on this "Remove the leaves from the stalk to preserve fennel tops. Freeze small portions of fennel in an ice cube tray. Transfer the frozen cubes to a storage container."
Do so by cutting the leaves off with a knife, or by gently using your fingers to pull them from the stalk. Put about 1 spoonful of leaves in each section, then top the leaves with water and freeze the trays. This creates perfectly-portioned cubes that are easy to simply drop in soup and sauce recipes as desired. Once the fennel ice cubes have frozen completely, transfer them to a plastic bag or storage container to keep them fresh.