Dill vs fennel
Their feathery fronds look almost identical, and both carry an anise note, so dill and fennel get mixed up at the market. But dill is fresh and grassy where fennel is sweet and licorice-like.
Dill
Fresh, grassy, citrusy, faintly anise
Dill is the feathery herb of Anethum graveolens, a Mediterranean plant in the carrot family, with a fresh, grassy, citrusy flavor and a faint anise note. The soft green fronds, sold as dill weed, are the herb most people know, brightening fish, potatoes, cucumber, and yogurt sauces, and they are central to Scandinavian and Eastern European cooking. The plant also yields dill seed, a warmer, more caraway-like spice used mainly in pickling. Like most tender herbs, fresh dill loses its punch with heat and is best added near the end.
Fennel seed
Sweet, warm, gentle licorice
Fennel seed is the dried fruit of Foeniculum vulgare, a feathery Mediterranean plant in the carrot family, with a sweet, gentle licorice flavor milder than anise. The greenish-tan seeds are warm and aromatic and turn nutty when toasted. Fennel is a signature of Italian sausage and many fish dishes, and across South Asia the seeds are chewed plain as a breath freshener. It belongs equally in savory cooking and baking. Whole seeds keep far better than ground and are easy to crush by hand.
Which to use when
Use dill, fresh or as seed, when you want a bright, grassy, faintly anise lift for fish, potatoes, cucumber, and yogurt. Use fennel, usually as seed, when you want a sweeter, warmer, more pronounced licorice for pork, sausage, and tomato. Dill is the cooler, greener herb; fennel is the sweeter, warmer spice. Their fronds can stand in for each other, but the seeds taste clearly apart.
Common questions
- Are dill and fennel the same?
- No, though their feathery fronds look alike and both have an anise note. Dill is fresh, grassy, and citrusy; fennel is sweeter with a stronger licorice flavor. Dill leans savory and cool, fennel warm and sweet.
- Can I substitute fennel fronds for dill?
- For a garnish, yes, since the fronds are similar and feathery, though you get a sweeter, more licorice note. The seeds are not interchangeable: fennel seed is far sweeter than dill seed.
- Which one goes with fish?
- Both can, differently. Dill is the classic with salmon, pickles, and creamy sauces. Fennel suits richer fish and Mediterranean dishes where its sweetness fits.
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