4 Caramelise onion
Meanwhile, peel and finely slice the onion. Heat a non-stick pan over a high heat with a drizzle of oil. Fry the onions with a pinch of salt for 5 min until browned. Reduce the heat to low, cover with a lid and cook for 10 min further or until the onions have fully softened and caramelised. Remove from the pan.