In a large glass or metal mixing bowl, whip the egg whites until they become frothy. Gradually sprinkle in the sugar while continuing to beat until soft peaks start to form.
Once soft peaks are achieved, add a pinch of salt and a splash of lime juice, and keep beating until you reach stiff peaks that hold their shape.
Carefully fold in the shredded coconut and cocoa powder into the egg white mixture until just combined.
Using a tablespoon, drop spoonfuls of the mixture onto a prepared baking sheet.
Bake in the preheated oven for about 20 minutes, or until the macaroons are golden brown and firm to the touch.
Let them cool on the baking sheets placed on wire racks before transferring to an airtight container for storage.