Warm the oil in a medium-sized frying pan.
Add the onion and cook gently for 10 minutes until soft and golden.
Pour in the vinegar and sugar, cooking until the liquid has evaporated.
Remove and cool.
Beat the cream cheese and sour cream until smooth.
Add the onions, Worcestershire sauce, onion powder, salt, pepper and a dash of Tabasco.
Stir through the chives and a squeeze of lemon.
Serve with crispy vegetables and chips.
