Celeriac Rösti with Harissa Yogurt

The smell of frying potatoes used to wake me up on Sunday mornings, but it wasn't until I swapped in celeriac that I realized how much brighter breakfast could taste. That earthy, slightly sweet crunch changes everything about a classic rösti. I'd bought the knobbly root on a whim at the market, unsure what to do with it, and by noon it was golden in my pan with a runny yolk bleeding into spiced yogurt. It's messy, vibrant, and completely worth the grated knuckles.

I made this for friends once after a long hike, and everyone stood around the stove waiting for the next batch to come out of the pan. We ate straight from the paper towels, passing the harissa yogurt like a peace offering. One friend said it tasted like fall and summer arguing in the best way possible. I've never thought of celeriac the same since.

Ingredients

• Celeriac: This knobby root brings a subtle celery flavor and crisps beautifully when grated and fried, just make sure to peel away all the tough skin.
• Potatoes: They bind the rösti together and add familiar comfort, but don't skip squeezing out the water or you'll end up with soggy patties.
• Onion: Finely grated onion melts into the mixture and adds a quiet sweetness that balances the earthiness of the celeriac.
• Fresh parsley: It brightens the whole dish with a pop of green and a hint of freshness that cuts through the richness.
• Plain flour: Just enough to hold everything together without making the rösti heavy, and you can swap in gluten-free flour without any trouble.
• Egg: Acts as the glue that keeps each rösti from falling apart in the pan.
• Olive oil: For frying, it gives a crisp golden crust and a fruity undertone that butter alone can't match.
• Greek yogurt: Thick and tangy, it's the perfect creamy base for the harissa and cools down the heat just enough.
• Harissa paste: This North African chili paste is smoky, spicy, and a little sweet, and it transforms plain yogurt into something you'll want to eat with a spoon.
• Lemon juice: A squeeze wakes up the yogurt and keeps everything tasting fresh and lively.
• Butter or olive oil for eggs: I prefer butter for frying eggs because it foams and crisps the edges just right.
• Extra parsley and lemon wedges: A final sprinkle and squeeze make the plate look alive and taste even better.

Instructions

Squeeze the vegetables dry:

Place the grated celeriac and potato in a clean kitchen towel and twist it over the sink until your hands hurt a little. This step matters more than you think, the drier the mix, the crispier the rösti.

Combine the rösti mixture:

In a large bowl, toss together the squeezed vegetables, onion, parsley, flour, egg, salt, and pepper until everything is evenly coated. It should look shaggy but hold together when you press it.

Fry the rösti:

Heat half the olive oil in a non-stick pan over medium heat, then drop heaped spoonfuls of the mixture and flatten them gently with the back of the spoon. Fry for 4 to 5 minutes per side until they're deeply golden and crisp, working in batches and adding more oil as you go.

Keep them warm:

Transfer each finished rösti to a paper towel-lined plate and keep them in a low oven while you finish the rest. They stay crispy and hot without getting greasy.

Mix the harissa yogurt:

In a small bowl, stir together the Greek yogurt, harissa paste, lemon juice, and a pinch of salt. Taste it and adjust the heat or tang to your liking.

Fry the eggs:

Heat butter or oil in a clean pan over medium heat, crack in the eggs, and fry them however you like them best. I go for lacy edges and a runny yolk every time.

Plate and serve:

Stack a few rösti on each plate, add a generous dollop of harissa yogurt, and top with a fried egg. Finish with chopped parsley and a lemon wedge on the side.

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The first time I nailed the crispy edges, I stood there with my spatula like I'd won something. My partner walked in, saw the golden pile, and said it smelled like a café. We ate them with our hands, yolk running everywhere, and I realized this dish didn't need anything fancy to feel special.

Making It Your Own

You can stir a tablespoon of cornmeal into the rösti mix for extra crunch, or swap the regular potatoes for sweet potatoes if you want a hint of sweetness. I've also used sriracha instead of harissa when I'm out, and it works beautifully with a little honey stirred in. Some mornings I'll add crumbled feta to the yogurt or scatter za'atar on top for a Middle Eastern twist.

Serving Suggestions

This dish loves a simple green salad dressed with lemon and olive oil, or a handful of arugula piled on the side. If you're feeding a crowd, double the rösti and keep them warm in the oven while you fry eggs assembly-line style. It also pairs beautifully with smoked salmon, crispy bacon, or roasted cherry tomatoes if you want to make it a bigger spread.

Storage and Reheating

Leftover rösti keep in the fridge for up to two days, and they reheat brilliantly in a hot oven or a dry skillet to bring back the crispness. I don't recommend freezing them because they lose their texture, but the harissa yogurt stays fresh for three days and actually tastes better the next day when the flavors have melted together.

• Reheat rösti in a 200°C (400°F) oven for 8 to 10 minutes until crisp again.
• Store the harissa yogurt separately in an airtight container in the fridge.
• Fry the eggs fresh each time, they're never the same reheated.

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This recipe taught me that vegetables can be just as satisfying as any meat-heavy breakfast, and that a little heat and tang can turn simple ingredients into something you crave. I hope it makes your kitchen smell as good as mine does on Sunday mornings.

Recipe FAQs

→ Can I make the rösti ahead of time?

Yes, you can prepare the rösti mixture up to 4 hours ahead and refrigerate. You can also cook them in advance and reheat in a hot oven at 200°C for 5-7 minutes to restore crispiness.

→ What can I substitute for celeriac?

You can use parsnips, turnips, or sweet potatoes as alternatives. Each will bring a slightly different flavor profile, but all work well with the harissa yogurt and fried eggs.

→ How do I make the rösti extra crispy?

The key is squeezing out as much liquid as possible from the grated vegetables. Also, ensure your pan is hot enough and don't overcrowd—cook in batches for best results.

→ Can I use a different yogurt?

Greek yogurt works best for its thick consistency, but you can use plain full-fat yogurt or even sour cream. Avoid low-fat varieties as they may be too watery.

→ Is this dish suitable for meal prep?

The rösti can be cooked ahead and stored in the fridge for up to 3 days. The harissa yogurt keeps well for 3-4 days. For best results, fry eggs fresh when serving.

→ How spicy is the harissa yogurt?

Harissa has a moderate heat level, but the yogurt mellows it significantly. Start with 1 tablespoon of harissa and adjust to your preference. You can always add more for extra kick.