Some recipes seem simple, almost instinctive, yet everything is perfectly thought out. This one, imagined by Alice Hart in L’art de sublimer les légumes (Les Éditions La Plage), is one of them.
In a wood-fired oven, this recipe for roasted sweet potato takes on an even more sensory dimension. The radiant heat develops a slight smoky note that runs discreetly through the whole dish – never overpowering, just present enough to give depth to the natural sweetness of the sweet potato. There’s that very special taste of vegetables cooked close to the coals: something rustic, lively, almost archaic in the best sense of the word.
The sweet potato becomes almost carnal. The wood fire concentrates its natural sugars, the skin shrivels slightly and the flesh takes on a dense, silky texture. Then come the contrasts: the flavor of tahini, cold yogurt, lively harissa, slowly candied onions, black sesame.
It’s exactly the kind of cuisine we like: generous without showing off, vegetal but never austere, contemporary without seeking effect.
Why this roasted sweet potato recipe works so well in the wood-fired oven
Wood-fired cooking reveals all that sweet potatoes have to offer:
- a lightly caramelized skin,
- melting, almost candied flesh,
- a natural concentration of sugars,
- a deeper flavor,
- ample warmth that develops the spices and sesame without overpowering them.
In an oven with high inertia, cooking becomes particularly interesting: the heat penetrates the vegetable slowly, without drying out its surface. You get that special feeling of vegetables cooked in embers – something rustic and sophisticated at the same time.
Cooking sweet potatoes in a wood-fired oven
Cooking sweet potatoes in a wood-fired oven gives them a particularly melt-in-the-mouth texture, while naturally concentrating the vegetable’s sugars. Thanks to the thermal inertia of our ovens like Le Flambeur Pro 120 and the radiant heat of the oven, the flesh becomes dense and silky without ever drying out.
Ingredients (serves 4)
Salt, pepper
4 large sweet potatoes (approx. 300 g each)
2 tbsp. olive oil
3 red onions, thinly sliced
1 pinch sugar (optional)
1 tsp. coffee roasted cumin seeds
1 clove garlic, crushed
3 tbsp. tahini
juice + zest of 1 lemon
4 tbsp. Greek yoghurt
2 tbsp. harissa
1 bunch coriander
2 tsp. black sesame seeds
Preparation of the wood-oven roasted sweet potato recipe
1. Prepare the wood-fired oven
This recipe works best in a wood-fired oven stabilized at around 200°C.
The idea is not to bake with aggressive heat, but with ample, even, descending heat. After the flambé, let your wood-fired oven rest for a few minutes. Spread the embers to work with indirect cooking, while keeping a slight presence of hot embers in the oven.
It’s this balance that allows us to achieve both deep cooking and that subtle smoky signature that makes all the difference.
2. Roast sweet potatoes
Lightly prick the sweet potatoes, then place them directly on the sole in an open casserole or wood-fired oven dish.
Bake for 45 minutes to 1 hour, depending on size.
They should collapse slightly under finger pressure. The skin becomes darker, almost satiny in places, while the interior takes on a dense, creamy texture, with delicate smoky notes developed by the heat of the wood and embers.
3. Onion confit with cumin
While the sweet potatoes are cooking, gently fry the red onions in olive oil with a pinch of salt, in a pan suitable for a wood-fired oven.
After twenty to thirty minutes, they become soft, almost candied. Add the sugar if necessary, then the roasted cumin and a few turns of black pepper.
This step adds depth to the dish, which responds perfectly to the harissa and the smoky notes of the wood fire.
4. Tahini with lemon & harissa yoghurt
Relax the tahini with the lemon juice, garlic and a little lukewarm water until the sauce is soft and glossy.
In a separate bowl, mix the Greek yogurt with the harissa and a pinch of salt.
One brings freshness and acidity. The other, tension and relief.
6. Dressage
Open the still-burning potatoes.
Let the steam escape for a few seconds, then successively add :
- harissa yoghurt,
- candied onions,
- tahini sauce,
- a few coriander leaves,
- black sesame,
- a little lemon zest.
Serve immediately.
The contrast between the smoky warmth of the wood-oven-roasted sweet potato, the freshness of the yoghurt and the depth of the tahini makes for a particularly well-balanced plate – at once comforting, vibrant and very contemporary.
Conclusion
This recipe for sweet potato roasted in a wood-fired oven is a perfect illustration of what cooking over a fire can do for vegetables: more depth, more texture, more aromatic relief. A precise yet instinctive cuisine, where the warmth of wood transforms simple ingredients into a particularly generous dish.
This recipe for sweet potatoes roasted in a wood-fired oven is a natural accompaniment to simple, plant-based preparations, capable of prolonging the balance between warmth, freshness and smoky notes, such as :
This wood-oven-roasted sweet potato recipe is a must if you want to get the most out of your oven.
Simple to make, full of flavor and ultra-comforting, it ticks all the boxes: taste, texture and originality.
Find more vegetarian recipes cooked in a wood-fired oven on our blog, including vegetarian tartiflette and butternut & ricotta lasagne.
Tips for perfect cooking
If you have chosen to build your wood-fired oven in kit form or equipped yourself with a turnkey wood-fired oven like Le Flambeuryou’ll be assured of a constant, stable temperature thanks to the weight of your oven.
Place the vegetables directly in the cooking pot to retain all their heat and serve them as they come out of the wood-fired oven.
If you’re considering investing in a cocotte compatible with wood-fired oven cooking, it’s best to opt for sturdy, durable material. Enamelled cast-iron cocottes from French brands such as Le Creuset are a safe bet, with excellent heat distribution and long life. As for ceramics, models from Emile Henry also offer very interesting alternatives. Finally, for those who prefer a rougher, uncoated cast iron, Swedish brand Skeppshult offers cast-iron models that are sturdy without chemical treatment.
