Pretty easy peasy and using pantry staples - if you have some limes and some butter - get cracking - would be equally nice using lemons or oranges.
Recipe adapted from from Enchanted Kitchen (sans icing)
250g butter, softened
2 limes, rind finely grated
1 cup caster sugar
3 eggs, separated
2 cups self-raising flour, sifted
Preheat oven to 170 degrees c
After you've separated your eggs, beat your whites until you get firm peaks, set aside.
Then cream your butter and sugar, add egg yolks and lime zest
Sift in your self raising flour and then mix as you pour in the buttermilk.
Lastly fold through the egg whites and then pour into your greased tin.
Bake for 50 minutes, remove from oven and cool on rack.
Then turn it up the 'right way!
If you wish to ice - use the juice from the limes with some 1 1/2 cups icing sugar and add enough to get to a thick-ish consistency - add water if you don't have enough juice. Drizzle over cake.
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