Beat the egg whites until very stiff, slowly adding the sugar. Stir in the lime juice and lime zest. Continue beating for about 10 minutes. Mix ground and chopped almonds well and fold in carefully.
Pour the dough into a piping bag with a large perforated spout and squirt small mounds onto the wafers. Bake in the preheated oven (electric: 150 °C/ gas: level 1) for 15-20 minutes. Allow to cool for about 2 minutes and then gently squeeze the heaps together.
Results in about 35 pieces.