Brightly coloured yam, long enjoyed in east Asia, has been appearing in drinks, desserts – and, of course, TikTok feeds Brightly coloured yam, long enjoyed in east Asia, has been appearing in drinks, desserts – and, of course, TikTok feeds B right purple coffees and cocktails made with a root vegetable called ube have hit the high street in the UK after the yam’s striking hue caused a sensation on social media. Many are calling ube the “new matcha”, and it has a nutty, creamy, sweet taste, like