Key Lime Madeleines

Madeleines

• 190 g cake flour
• ½ tsp baking powder
• ¼ tsp salt
• 170 g unsalted butter, cut in cubes (2 cm), plus extra for greasing
• 120 g caster sugar
• 3 - 4 key limes, zest only, without white pith
• 3 eggs, room temperature
• 1 egg yolk, room temperature

Glaze

• 100 g white couverture chocolate chips
• some freeze dried strawberries, chopped
  or some key limes, finely zest only