6ouncecaster sugar I think this is called superfine sugar in the US
6ouncebutter or margarine butter is always best for flavour
Juice and finely grated zest of 2 limes
5tablespoonwater
0.5teaspoonxanthan gum
1teaspoonbaking powder
8ounceicing sugarpowdered sugar
2tablespoonbutter/margarine
zest of 1.5-2 limes as required
3ouncedessicated coconut to decorate
Instructions
Grease and line a rectangular flan dish with baking parchment.
Put the flours, sugar, butter/marg, xanthan gum, baking powder, water and eggs in a bowl and combine with an electric whisk, till smooth. Add the lime juice and zest and combine.
Use a spatula to spread the mixture into the cake tin. Bake at 180 degrees celsius for 30 minutes.
Leave to cool.
Once cooled, combine the icing sugar, lime juice and margarine, adding a little water to mix if necessary. Spread over the top of the cake. Sprinkle the dessicated coconut over to cover the cake fully.