Walnut cream crêpes with chocolate sauce recipe

Ingredients

• 150 g plain flour
• 0.5 tsp salt
• 2 tsp granulated sugar
• 2 eggs, well beaten
• 0.5 tsp vanilla extract
• 1 pinch grated lemon or orange zest (optional)
• 400 ml milk
• 1 slather melted butter, for brushing