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This Celery Root Mashed Potatoes recipe is all about flavor, texture, and balance. It is a way to make mashed potatoes that are creamy, rich, and just a little smarter nutritionally. The celeriac adds complexity without overpowering the dish. No one notices it’s in there, but everyone asks what makes it taste so good. This is a mashed potato upgrade that doesn’t feel like one.
Table of Contents
Why Celery Root Mashed Potatoes Works
The Honest Carb Math:
According to USDA FoodData Central, a single serving of mashed russet potatoes carries about 36g net carbs — nearly all of it starch, with almost nothing standing in the way. Swap in celery root instead, same serving size, same creamy texture, and that number drops to roughly 9g net carbs. A 50/50 blend lands right in the middle, around 23g. The takeaway isn’t that celery root makes this dish “low-carb” — 9g is still 9g — but it does mean the carb load can be dialed down considerably depending on how much celery root replaces the potato, from a modest trim at 50/50 to a real difference going celeriac-forward.
What tends to surprise people is how well celery root holds up once it’s dressed the same way potatoes are — butter, sour cream, a little salt and pepper. Mashed and loaded up, the texture is nearly identical, and plenty of people can’t pick out which is which in a blind taste test. There’s also a case to be made the other way: potatoes, on their own, are fairly bland — most of what’s loved about mashed potatoes comes from the butter and toppings, not the potato itself. Celery root brings its own earthy, savory depth to the party, which is why some people end up preferring it once they’ve actually tried it.
- The 2:1 ratio of potatoes to celery root hits the sweet spot. Enough celeriac to lighten the carb load and deepen the flavor, but not enough to raise eyebrows.
- Boil together for ease. No fussing with multiple pans — the texture ends up perfectly uniform.
- Butter-only is the secret. Milk waters things down. Butter builds richness.
- Mash while hot. Temperature matters. Cold mash clumps and glues — hot mash stays fluffy.
- Clean base, custom toppings. Let people doctor their plate, not the whole pot.
Ingredient Spotlight
Russet Potatoes: The starch content makes them ideal for light, fluffy mashed potatoes.
Celery Root (Celeriac): Adds an earthy, savory note that blends seamlessly with potatoes and helps lower the carb count.
Butter: Essential fat for flavor and texture — the only liquid this mash needs.
Salt & Pepper: Basic seasoning, done right. Don’t skip.
Troubleshooting & Pro Tips
- Gummy texture? Overmixing is the cause. Use a ricer, not a mixer.
- Too wet? The steam did not escape after draining. Let it sit hot before mashing.
- Strong celeriac taste? The ratio went over the ⅓ threshold. Stick to 2:1.
- Not creamy enough? Not enough butter. Add more.
- Lumps? Underboiled, or not mashed while hot.
Make-Ahead, Storage & Reheating
Make-Ahead: These mashed potatoes with celeriac can be made up to 1 day ahead and reheated without losing texture.
Storage: Store in the fridge up to 3 days in an airtight container.
Freezing: Not recommended. The texture doesn’t hold up.
Reheating: Use the microwave in short bursts or reheat gently on the stovetop with added butter.
Celery Root Mashed Potatoes Serving Suggestions
These celery root mashed potatoes go with just about anything:
- Roast turkey or chicken
- Grilled steak
- Pork loin or pork chops
- Meatloaf
- Short ribs
- Fried okra
Optional toppings served on the side:
turkey gravy
crumbled bacon
sour cream
chopped chives
shredded cheese
garlic butter
caramelized onions
Frequently Asked Questions
Is celeriac the same as celery root?
Yes — they’re the same. Celeriac is the proper name, but most grocery stores label it “celery root.”
Is celery root low carb?
It’s lower in carbs than potatoes, but not zero-carb. This recipe reduces total carbs compared to full-potato mash without changing the taste.
Can I skip the celery root?
Sure, but then it’s just mashed potatoes. The celery root adds subtle depth and makes this version worth making.
Do I have to peel the celeriac?
Yes. The outer skin is rough and inedible. Use a knife, not a peeler.
Can I use milk or cream?
It is possible, but not recommended. It flattens the flavor and ruins the texture. Butter alone gives the best result.
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Celery Root Mashed Potatoes (with Celeriac)
Ingredients
- 2 russet potato , peel & chunk
- 1 celery root , peel & chunk
- ½ cup butter , pieces
- salt ,to taste
- black pepper , to taste
Instructions
- Boil potatoes and celery root in salted water for about 15 minutes until fork-tender
- Drain well and return to hot pot to steam off excess moisture for a minute or two
- Mash the potatoes and root with a potato ricer while they’re still hot
- Add plenty of butter, and salt and pepper to taste
- Stir gently just until blended, serve hot