Sherry has gained a bad reputation as a cheap tipple enjoyed by older folk, but in Spain’s Sherry Triangle, the drink is loved by all. Shane Delia discovers the complex and nuanced flavours of this refreshing aperitif that is the perfect accompaniment to Andalucían cuisine and culture. But it's Michelin-starred chef Ángel León who inspires Shane to lift his game - and back in his test kitchen, the pressure is on!