Lemon Custard Macarons - Get Cracking

Ingredients

• 50 g egg whites
• 1 ml yellow gel food colouring
• 4 ml lemon extract/essence
• 120 g almond flour
• 120 g icing sugar
• 3 egg yolks
• 150 ml granulated sugar
• 15 ml cornstarch
• 125 ml 3 1/4% milk
• 2 ml vanilla extract
• 15 ml lemon zest
• 45 ml fresh lemon juice
• 300 ml unsalted butter, room temperature
• 100 g granulated sugar
• 30 g water