If choosing fennel bulbs from your green grocer or farmer’s market look for a shiny, white bulb with tightly bound internal layers. Fennel that is subject to transit is more likely to be marked on its outer layer so remove any damaged parts before you begin cooking (no need to worry about this with home-grown produce though). It is always worth checking the firmness of the uppermost fronds on the fennel as a good indication of the bulb's freshness too- MB. Recipe: Braised Fennel with Verjuice, Caper Berries and Olive