3 tbsp caster sugar, plus 1 tbsp for sprinkling
1 tsp mixed spice
185²µ/6Β½΄Η³ϊ self-raising flour
50²µ/1ΒΎ΄Η³ϊ sultanas or currants (optional)
1 tbsp butter, melted, plus extra for serving
1 large free-range egg
185ml/6Β½fl oz semi-skimmed milk