Place the Earl Grey tea bags in milk, heat them, then let cool.
In a bowl, combine eggs and sugar and whisk together.
Add the Earl Grey-infused milk and melted butter, and mix well.
Sift in the flour and baking powder, then gently fold together.
Let the batter rest in the refrigerator for 30 minutes.
Brush the madeleine pan with butter and fill each mold up to 80% with batter.
Bake in a 170°C oven for 12–15 minutes.