内容摘要：The secret sauce of Hotol was heat exchanger technology, an attempt to cool the super-heated 1,000C air that enters an engine at hypersonic speeds.

The secret sauce of Hotol was heat exchanger technology, an attempt to cool the super-heated 1,000C air that enters an engine at hypersonic speeds.

Crouched in cold mud under a thin Spring rain, vineyard employee Élodie Bonet snaps off unwanted vine shoots with her fingers and pruning clippers."We want the vine to put all its energy into the shoots that have the flowers where the grapes are going to grow," she explains.

I leave Élodie working her way down the rows of vines, and walk up to the house and winery in the Burgundy village of Morey-Saint-Denis, where I meet owner and winemaker Cécile Tremblay.She takes me down to her cellar to taste some of her prized red wines, standing among the oak barrels and old bottles with labels weathered by mould and age.They have names on them that make wine lovers go weak at the knees - Nuits-Saint-Georges, Echezeaux, Vosne-Romanée, Clos-Vougeot, and Chapelle-Chambertin.

Ms Tremblay sells over half of her wine abroad, under the name Domaine Cecile Tremblay."For the United States, it's around 10% of the production; it's a big production for me!" she says.

After threatening a 200% mark-up on alcohol from Europe, Donald Trump imposed a 20% tariff on practically all European Union products on 5 April.

Four days later, he lowered this to 10%, with the threat that he'd hike it back up again to 20% in July, depending on how trade negotiations pan out. And now Trump is threatening a future tariff of 50% on all goods from the EU.Tiffany Murray from Blakeney, Gloucestershire, moved to Rockfield Studios in Monmouthshire aged six after her mum, a Cordon Bleu chef, got a job there after being praised by the band Black Sabbath.

Ms Murray's memoir, "My Family and Other Rock Stars", details how her mother, Joan, cooked for the likes of Queen and David Bowie."I was an only child so she would be cooking in the kitchen until the early hours and cleaning up and I was left to my own devices, so I did wander into the studios and annoy musicians at an early age," Ms Murray said.

Ms Murray previously lived in a house in Herefordshire, where her mum advertised rehearsal space to bands.The likes of Black Sabbath and Queen recorded there before moving onto Rockfield, where they would reminisce about Joan's food, leading to her being hired as the in-house cook.