1 lemon, juice only
250g/9oz plain flour
Β½ tsp bicarbonate of soda
8 cardamom pods
2 tsp ground cinnamon
1 tsp ground ginger
1 tbsp icing sugar
80g/2ΒΎoz light muscovado sugar
2 tbsp black treacle or molasses
70²µ/2Β½΄Η³ϊ butter
1 free-range egg, yolk only
around 2 tbsp milk