What Exactly Is Celeriac?
Celeriac, also known as celery root, knob celery, or turnip-rooted celery, is a distinct variety of celery (Apium graveolens) grown for its large, bulbous root rather than its stalks. Originating in the Mediterranean basin, it is a winter vegetable that has been a staple in European cuisine for centuries, though it is now grown worldwide, including in North America. Its appearance is rugged and intimidating, with a gnarled, brown outer skin and fine rootlets. However, beneath the tough exterior lies a creamy-white flesh that is surprisingly versatile.
Celeriac vs. Celery: Is It Just the Root?
Many people mistakenly believe celeriac is simply the root of the standard celery found in supermarkets. In reality, while they are botanical cousins from the same plant species, they are different cultivars bred for separate purposes. The main differences are in their physical form, texture, flavor intensity, and culinary uses. This side-by-side comparison clarifies the distinction:
| Feature | Celeriac (Celery Root) | Celery (Stalk Celery) |
|---|---|---|
| Part Used | Large, bulbous root | Long, crisp stalks |
| Flavor Profile | Subtly sweet, nutty, earthy, and mellow | Pungent, assertive, and herbaceous |
| Texture (Raw) | Firm, crunchy, and crisp | Crisp and watery, with fibrous strings |
| Texture (Cooked) | Creamy, tender, and becomes silky smooth | Softens but remains quite fibrous and stringy |
| Primary Use | Purées, roasts, mashes, soups | Salads, stews, snacks, broths |
| Preparation | Peeling is difficult; requires a sharp knife | Simple trimming and washing |
The Unique Flavor and Texture Profile
When raw, celeriac has a flavor that is a pleasant blend of celery and parsley, with a fresh, peppery edge. Its texture is crisp and firm, similar to an apple or turnip. Once cooked, its magic truly shines. The vegetable becomes sweet, earthy, and nutty, with a much more subdued and mellow celery flavor. The texture transforms from firm to exceptionally creamy and velvety, making it an excellent base for purées and soups.
How to Prepare Celeriac
Preparing celeriac can seem daunting, but a sharp knife and a bit of technique make it simple. Remember that once cut, the flesh oxidizes and browns quickly, so it's best to have a bowl of acidulated water (water with lemon juice) ready to submerge the pieces.
- Wash and Stabilize: Scrub the exterior to remove all dirt. Slice off a small portion from the root end and the top end to create two flat, stable surfaces.
- Peel the Skin: Place the celeriac on one of its flat ends. Use a sturdy chef's knife or paring knife to slice downwards, following the curve of the bulb to remove the tough, fibrous outer skin and any residual rootlets.
- Cut and Prevent Browning: Immediately chop the peeled celeriac into cubes, slices, or matchsticks, depending on your recipe. Place the cut pieces into a bowl of acidulated water until ready to use.
Versatile Ways to Cook with Celeriac
Celeriac is a wonderfully versatile vegetable that can be prepared in numerous ways, showcasing its unique taste and texture. Here are some popular culinary uses:
- Mashed: Boil chunks until tender and mash with butter, cream, and a pinch of nutmeg for a delicious, creamy purée that is a lower-carb alternative to mashed potatoes.
- Roasted: Cut into cubes or wedges, toss with olive oil and herbs, and roast alongside other root vegetables for a caramelized, sweet, and nutty flavor.
- Soup: Use celeriac as the base for a creamy, earthy, and satisfying soup. It pairs beautifully with ingredients like leeks, apples, and herbs.
- Remoulade: This classic French salad involves shredding raw celeriac into matchsticks and tossing them in a tangy, mustard-based mayonnaise dressing.
- Fries or Chips: Cut into thin strips or slices, toss with oil and salt, and bake until golden and crisp for a healthier snack.
- In Place of Potato: Celeriac is significantly lower in carbs than potatoes, making it a favorite for those on keto or low-carb diets. Use it in gratins, cottage pie toppings, or simply as a mash.
- Stocks: Its subtle celery flavor makes it an excellent addition to vegetable stocks and broths.
Health Benefits of Celeriac
Beyond its culinary appeal, celeriac offers a wealth of health benefits. It is a nutrient-dense vegetable that is naturally low in fat and calories. It is also high in dietary fiber, which aids digestion and promotes a healthy gut. A 100g serving of raw celeriac is an excellent source of several vitamins and minerals:
- Vitamin K: Essential for blood clotting and bone health, with one serving providing over a third of the daily value.
- Vitamin C: A powerful antioxidant that supports immune function.
- Potassium: Helps regulate blood pressure and supports cardiovascular health.
- Vitamin B6: Important for brain health and metabolism.
- Manganese: Plays a role in antioxidant defense and bone formation.
- Fiber: High fiber content helps promote gut health and satiety.
How to Store Celeriac Properly
Proper storage is key to extending the life of celeriac and ensuring its flavor and texture remain intact. For best results, choose a firm, unblemished root that feels heavy for its size.
- Whole Storage: Store the whole, unwashed, and unpeeled celeriac loosely wrapped in a paper bag or plastic wrap in the refrigerator's crisper drawer. It will keep for several weeks, if not months, under these conditions.
- Cut Storage: Once cut or peeled, celeriac will begin to brown. To combat this, place the pieces in a bowl of acidulated water (water with lemon juice or vinegar) and store them in the fridge for up to three days.
Conclusion: Embracing the Knobby Vegetable
Celeriac may look a little rugged on the outside, but it is a chef's secret ingredient and a home cook's best-kept secret for good reason. Its mild, earthy, and nutty flavor makes it a fantastic and versatile ingredient for many dishes, both raw and cooked. From a creamy, smooth mash to a crisp remoulade, the possibilities are endless for this healthy root vegetable. By understanding what celeriac is and embracing its unique taste, you can unlock a new world of hearty and delicious meals. For more celeriac inspiration, including recipes, be sure to check out some of the great resources at Allrecipes.com.