
Warm a tablespoon of olive oil in a heatproof pot. Season the beef cheeks lightly, sear them on all sides, then take them out and keep aside.
In the same pot, pour a bit more oil, add the onion, celery, carrots, and garlic. Cook on low heat until they soften and caramelise. Stir in rosemary for a couple of minutes.
Add the Pedro Ximenez and let it simmer until it reduces significantly. Then, pour in the stock and continue to simmer until it reduces further.
Preheat your oven to 180C/160C Fan/Gas 4.
Strain the sauce through a sieve, discarding the veggies. Place the beef back in the pot and pour the sauce over. Bake covered for 2½ to 3 hours.
Once cooked, ensure the beef is soft and the sauce is thickened. If needed, remove the meat and reduce the sauce on the stove before combining again.
For the mash, boil salted water in a large pot, add the potatoes, and cook until tender. Drain and allow to dry slightly.
Mash the potatoes with butter and cream until smooth. Season with salt and pepper to taste.
Melt butter in a pan and sauté the kale until wilted.
Serve the mashed potatoes topped with a piece of beef, a helping of kale, and a drizzle of sauce. Garnish with chives before serving.
