Ingredients 

• 400g plain flour
• 200g unsalted butter
• 100g sugar
• 2 eggs
• vanilla essence
• zest of 1 lemon

Method

1. Start by mixing butter with flour. Rub in with your hands until it resembles fine bread crumbs. You can also use a k beater to do this.
   

   

    

2. Add sugar and mix well. Add vanilla essence, lemon zest and eggs. Combine all very well until you a have a nice smooth dough.
   

   

   

   
3. Knead dough lightly, wrap in cling film and put in fridge to rest for an hour.