Two, the recipe calls for fresh fennel bulb but every single time I've made it, I swapped the fennel for celery (because that's all that was available at my grocery store and I was too lazy to go fennel hunting around town) and have never felt it lacking in anything, as the celery delivers the same level
of crunch and
spring - like
taste, leaving the fennel seeds and Italian sausage to bring in the
truer fennel - y flavors.