Spoon Basic Meringue Mixture into a decorating bag fitted with a large star tip. Pipe 36 (1 1/4-inch) mounds onto parchment paper-lined baking sheets.
Bake at 200° for 2 hours; turn oven off. Let meringues stand in closed oven with light on 8 hours.
Spread a thin layer of chocolate on flat sides of meringues. Press 2 flat sides together.
Note: Meringue mixture may be piped into teardrop shapes using star-shaped tip.
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