Remove excess chocolate from satin by gently scraping the stain with a spoon.
Blot the chocolate stain with a clean, white rag. Avoid rubbing the rag into the fabric.
Cover the stain with flour or cornmeal to absorb the greasy substance in chocolate, known as cocoa butter. Let flour or cornmeal set for about 1 hour. Brush from fabric with a soft bristle brush. Blot the stain with a white rag soaked in cool water. If stains are still visible, add 2 to 4 drops of mild liquid detergent to 1 cup of cold water. For dark chocolate, add 2 to 3 tablespoons of white distilled vinegar to the mixture. Apply the mixture to the stain and rinse the area from the backside of the fabric, so the water moves through the satin. Avoid rubbing the fabric.