Meringue Or Air Cookies

• 12 cookies
• 3 egg whites
• 2 3/4 from fat
• 1 at a time
• 1 fat
• 3/4 meringue to mixing bowl
• 1/2 reserved meringue indentation (plain into)
• 150 gr sugar
• 16 gr cocoa
• 1 ml cream of tartar