1 orange, zest and 2 tsp juice
700g/1lb 9oz plums, stoned and halved
50²µ/1¾´Ç³ú caster sugar
2 tsp ground cinnamon
50²µ/1¾´Ç³ú demerara sugar
300²µ/10½´Ç³ú self-raising flour, sifted
100²µ/3½´Ç³ú butter, cut into pieces, plus extra for greasing
50²µ/1¾´Ç³ú butter
150ml/¼ pint of milk