A hint of chilli balances the cool mint and gives a good flavour as well as an attractive colour to this dish.
Peel the cucumber and cut in half, lengthways. Using a teaspoon, scoop out seeds and discard. Cut each of the two lengths into 1cm slices.Melt the butter in a large frypan. Add the oil and chilli sauce. Saute the cucumber until softened and heated through, about 2-3 minutes. Season to taste and sprinkle with the chopped mint. Serve immediately.