Turkey, Sweet Potato and Tart Cherry Traybake
One tray, thirty-five minutes, and a dinner built for the evening rather than the gym. The cherries are not a garnish — they are the reason this is on the list.
Ingredients
- 2 turkey breast steaks, about 175g each
- 400g sweet potato, skin on, cut into 3cm chunks
- 120g cherries, fresh or frozen, stoned — sour varieties if you can get them
- 1 red onion, in wedges
- 2 cloves of garlic, whole and unpeeled
- 2 tbsp extra-virgin olive oil
- 1 tsp balsamic vinegar
- A sprig of rosemary
- A large handful of spinach
- Salt and plenty of black pepper
Method
- Heat the oven to 200C fan.
- Toss the sweet potato, onion, whole garlic cloves and rosemary with 1 tbsp of the oil, salt and pepper. Spread them out with space between them — crowded, they steam and go soft rather than caramelising. Roast for 15 minutes.
- Rub the turkey with the remaining oil and season it well.
- Push the vegetables aside, lay the turkey in the tray and scatter the cherries around it. Trickle over the balsamic.
- Roast for another 12 to 15 minutes. Turkey breast is unforgiving: take it out at 68C in the thickest part and let it rest for five minutes, where it will carry on to a safe 71C. Cooked to 75C in the oven it will be dry, and no sauce fixes that.
- Rest the turkey on a board. Stir the spinach through the hot tray so it wilts in the cherry juices, then slice the turkey and serve it on top.
Why it works
Almost everything written about food and sleep is about what to avoid. This is a dinner built around what to include.
Turkey is high in tryptophan, the amino acid the body converts to serotonin and then to melatonin. Tryptophan on its own, though, competes with other amino acids for transport into the brain and usually loses. Carbohydrate is what changes that: it triggers an insulin response that clears the competing amino acids from the blood, leaving tryptophan a clearer run. That is why the sweet potato is not optional here — turkey without the carbohydrate is just a lean protein.
Cherries are one of the few foods containing measurable melatonin, and sour varieties carry considerably more than sweet ones. Small trials of tart cherry juice have reported modest improvements in sleep duration; the effect is real but not large, and it is not a substitute for a dark room and a consistent bedtime.
Sleep is where this matters most for hormones. The great majority of daily testosterone release happens during sleep, and short or fragmented sleep lowers next-day levels in healthy men within a week. For women through perimenopause, the sleep disruption is often the symptom that makes every other symptom worse.
Eat it two to three hours before bed. Later than that and digestion works against you.
More: sleep apnoea and testosterone · menopause, sleep and hormones.
