Preheat the oven to 130°C/265°
Cover a large baking sheet with baking paper and use a pencil to draw three 18-cm/ 7-inch diameter circles on the paper. Flip the paper over so the pencil is on the underside.
Sift the instant coffee powder and 2 tsp of icing sugar together and set aside.
Place the egg whites and 170 g/6 oz (1⅔ cups) of icing sugar into the spotlessly clean bowl of an electric stand mixer fitted with the whisk attachment. Begin whisking at medium speed. After about 1 minute, increase the speed to full and whisk until the mixture forms stiff peaks, about 10 minutes.
Gently fold the coffee and sugar mixture into the stiff meringue, let it sit for about 30 seconds and fold once more. In this time the coffee powder will begin to dissolve into the meringue.
Transfer some of the mixture to a piping (pastry) bag and pipe twelve small meringue kisses on the lined baking sheet. Evenly spread the remaining meringue in three thin disks, using the pencil circles as a guide. Bake for about 1 hour until crisp and set. When the meringue is cooked it will lift easily away from the baking paper. Allow to cool completely.