Preheat the oven: Preheat the oven to 140 °C and line a baking sheet with parchment paper.
Making the meringue: Whip the egg whites in a clean, grease-free bowl until soft peaks form. Gradually add the cane sugar and continue to whip until a smooth, glossy meringue forms.
Forming ladyfingers: Spoon the meringue into a piping bag or use a spoon to form ladyfingers of about 10 cm on the parchment paper.
Topping with Earl Grey: Evenly sprinkle the Earl Grey tea (or your chosen herb/tea) over the meringues.
Baking: Bake the meringues for 40 minutes in the preheated oven. They should feel firm but still slightly soft in the middle.
Cooling and storing: Allow the meringues to cool completely on a wire rack and then store them in an airtight container to maintain crispiness.