Sticky pork ribs in chilli caramel

1.Preheat oven to 150C. Stir sugar and 60ml water in a large ovenproof frying pan over medium-high heat until sugar dissolves, then bring to the boil and cook, swirling pan so it colours evenly, until dark caramel (4-5 minutes). Carefully add another 60ml water, then fish sauce (be careful, hot caramel will spit) and simmer for another minute to infuse flavours. Add shallot, chilli and garlic, simmer until starting to soften (2-3 minutes), then add ribs and cook, turning occasionally, until glazed all over (4-5 minutes). Transfer to oven and braise, turning occasionally, until ribs are very tender (1-1¼ hours). Remove from oven, stir in lime juice and rice vinegar and serve scattered with herbs, sprouts and chilli.