the eggs and beat again.
add the vanilla extract, lime zest and juice and beat. don’t worry if the batter splits it will come back when you add the flour. add the mint then 1/3 of the flour and buttermilk, beat together then add the another third then the other, beating in between each addition until just combined and smooth.
add to the paper cases and bake for 35 minutes. remove from the oven and cool in the tin for 10 minutes before cooling on a wire rack.
to make the syrup: add all the ingredients to a small pan and simmer until all the sugar has dissolved and leave to cool slightly. 