Preheat oven to 175C/Gas4. Grease a bundt pan or loaf tin.
To the bowl of your mixer add sour cream, eggs, sugar, vegetable oil, vanilla extract, limoncello and lemon zest. Mix thoroughly.
In another bowl, mix together the flour, salt, baking powder and baking soda. Add the flour mixture to the wet mixture and mix in.
Pour the batter in the prepared pan and smooth out the top with a spatula. Bake for about 40 mins or until golden brown. To test, insert a toothpick in the centre of the cake and if it comes out clean it's done. Transfer to a rack and cool.
Add ingredients for the glaze to a small bowl and whisk. Add more caster sugar or Ludovici Limoncello until smooth. Drizzle icing over cake and garnish with lemon zest.
Recipe by appetite magazine at https://www.appetitemag.co.uk/limoncello-drizzle-cake/