Lemon glaze madeleines

Madeleines

• 120 g unsalted butter, cut into pieces
• 2 eggs
• 120 g caster sugar
• 120 g plain flour
• 1 ½ tsp baking powder
• 1 pinch sea salt
• 1 tsp natural vanilla extract
• 1 lemon, zest only, no white pith
• 30 g milk
• 10 g oil

Lemon glaze

• 100 g icing sugar
• 30 g freshly squeezed lemon juice