French Macarons - Miz En Place

Ingredients

• 100 g egg whites (room temperature (about large 3 eggs))
• 140 g almond flour ((about 1-1/2 cups))
• 90 g granulated sugar ((just under 1/2 cup))
• 130 g powdered sugar ((about 1 cup))
• 1 tsp vanilla
• 1/4 tsp cream of tartar
• 1 cup unsalted butter (softened)
• 5 egg yolks
• 1/2 cup granulated sugar
• 3 tbsp water
• 1 pinch salt