Whisk together the egg whites and salt in a grease-free bowl ... Sprinkle with the remaining pistachios. Put the cookies into the oven, shut the door and turn off the oven immediately.
When egg whites are whisked, air is trapped in them, and remains trapped when the whisked egg whites are folded into meringues, mousses or soufflés and baked. Egg whites will whisk to a greater ...