Forget a crisp salad and glass of chilled rosé. Enervated Britons are seemingly more likely to crave a rich cottage pie and a robust red in heatwaves.

In a trend termed “reverse comfort eating”, Waitrose’s cottage pie sales have soared 110% in the last month and South African red wine is up 68% compared with the same period last year. The surprise spike in demand for winter comfort foods also includes retro chicken, bacon and leek pie (up 41%), chicken korma (up 67%) and chicken and ham gratin (68%).