4 small bananas,
 3 mashed (340g/12oz prepared weight), 1 sliced lengthways
1 large sprig fresh thyme, leaves picked
175g/6oz caster sugar
100²µ/3½´Ç³ú caster sugar
120ml/4fl oz olive oil
pinch salt
½ tsp salt flakes
300g/10oz self-raising flour, sifted
50g/1¾oz salted butter, melted, plus extra for greasing the tin
45g/1½oz salted butter
60ml double cream

75ml/2½fl oz full-fat milk, at room temperature