Almost all of it. One plant gives you five usable harvests, from the crisp white bulb at the base to the dust-fine pollen up at the flowers. The edible parts of fennel run from root to bloom, and each one carries its own version of that soft anise flavor. Very little has to go in the bin. Once you learn which piece does what, you stop tossing the good stuff and start cooking with the whole plant.
Start at the bottom with the bulb, the part most cooks reach for first. Fennel bulb uses cover both raw and cooked dishes, so you have plenty of room to play. Slice it thin and it goes crunchy and bright in a salad with a squeeze of lemon. Roast it and it turns soft, sweet, and mellow, with the sharp anise edge cooking right out. Only one type of fennel forms this swollen base, though, and that detail trips people up at the market more than anything else.
Move up the plant and you hit the stalks. The young, tender stalks taste like a milder celery, and you can chop them into a salad or a braise without a second thought. Older stalks turn stringy and tough, so you trim those off before they reach your plate. Don't throw them out, though. They still hold real flavor, and they work great as a base for stock or laid under a roasting chicken to perfume the pan.
Higher still you find fennel fronds and seeds, two of the best bits and the ones most people waste. The feathery green fronds act as a soft herb, much like dill. Scatter them raw over fish, roasted potatoes, or a bowl of soup right before you serve it. Later in the season the plant flowers and sets seed. Those aromatic seeds dry into the warm, sweet spice you already know from sausage, sauce, and crusty bread. Pinch a few between your fingers and you smell it right away.
Don't skip the flowers themselves. The yellow blooms carry fennel pollen, a fine golden dust with an intense anise punch. Extension sources at NC State and Utah State point to the same thing. The flowers, leaves, and seeds all earn a place in your cooking. The pollen packs the most concentrated flavor of the whole plant, so a tiny pinch goes a long way as a finishing touch. Gather it by snipping the flower heads into a paper bag and letting them dry.
The trick is to match each part to the dish in front of you. Use the bulb raw or roasted as the main event of a side. Treat the fronds as a fresh herb and add them at the very end so they stay green and bright. Send the woody stalks into a pot of stock where their flavor has time to seep out over a slow simmer. Save the seeds and pollen for the last second, sprinkled on as a spice rather than cooked in, so you keep that sharp top note.
One last point worth keeping in mind. Only Florence fennel grows that fat, edible bulb you want for roasting and salads. The common roadside or herb fennel you might spot growing wild gives you plenty of fronds, seeds, and pollen, but no bulb to slice. So when a recipe calls for a bulb, check the label at the store and buy the right kind. Get that one choice right, and the rest of the plant feeds you for months.
Read the full article: Fennel Plant: Grow, Care, and Harvest Guide
