Preheat the oven to 180°C (356°F)
Mix flour, sugar, vanilla
Add oil, sparkling water, lemon juice and zest and apple cider vinegar to make a smooth dough
Pick the currants and add to the dough
Put the dough in a greased loaf pan
Bake for 40-50 minutes
Place the cake on a wire rack and let it cool off
Melt the white chocolate with coconut oil and spread on top of the cake.
Decorate with left over currants