Step 1

Preheat oven to 200C. Rinse chicken inside and out, then pat dry with paper towels and place in a roasting pan. Season well, rub skin with olive oil and roast until chicken is golden and juices run clear when thigh is pierced with a skewer (about 1 hour). Cool to room temperature, then remove leg meat, coarsely break up and place in a bowl. Remove breast meat from bones, thickly slice and add to leg meat (reserve bones for stock).

Step 2

Meanwhile, place beetroot in a large roasting pan with 60ml water, drizzle with oil, season to taste, cover with foil and roast, shaking pan occasionally, until tender (20-30 minutes). When cool enough to handle, peel and halve.

Step 3

Cook potatoes in boiling salted water until nearly tender (8 minutes), then turn off heat and stand in water to continue cooking until tender (5 minutes). Drain and halve.

Step 4

For beurre noisette dressing, cook butter in a saucepan over high heat until foaming and nut-brown (4-5 minutes). Meanwhile, bring vinegar and shallot to the boil in a small saucepan and reduce by half (3-5 minutes). Add to butter, transfer to a blender, add verjuice and good pinches of salt and pepper, and blend until smooth. Check seasoning and set aside.

Step 5

Combine beetroot and potatoes in a bowl, dress with beurre noisette dressing and toss to combine. Serve topped with sliced chicken, herbs and mâche leaves, drizzled with beurre noisette dressing and seasoned with a pinch of piment d’Espelette to taste.