It’s a Wednesday – a work day – when I find myself sipping lapsang souchong tea on the terrace of the Tivoli Palacio Seteais, in Portugal’s castle heartland of Sintra. I’m savouring not just the smoky flavour but the story of how, in 1662, Catherine of Braganza – the Portuguese wife of King Charles II – introduced the art of tea drinking to the English courts with a chest of this very variety. It’s an ideal way for a freelance writer to take a break while living and working…