Ingredients

• 1/4 cup sugar plus additional for coating ramekins
• 8 ounces fine-quality bittersweet chocolate (not unsweetened)
• 3/4 stick (6 tablespoons) unsalted butter
• 2 tablespoons heavy cream
• 4 large egg yolks
• 7 large egg whites
• 1/4 teaspoon cream of tartar
• Accompaniment: creamy caramel sauce

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Instructions

1. Butter six 1-cup ramekins (4 by 2 inches) and coat with sugar, knocking out excess sugar.
2. Finely chop chocolate. In a small saucepan melt butter over low heat. Add cream and bring just to a boil. Remove pan from heat and add chocolate, stirring until smooth. Transfer mixture to a large bowl and stir in yolks.
3. In another large bowl with an electric mixer beat whites with cream of tartar and a pinch salt until they just hold stiff peaks. Gradually add 1/4 cup sugar, beating until just combined. Stir one fourth whites into chocolate mixture to lighten and fold in remaining whites gently but thoroughly.
4. Divide soufflé mixture among ramekins and smooth tops with a knife. Run tip of knife around edges of soufflés to aid rising. Soufflés may be made up to this point 1 day ahead and chilled, loosely wrapped in plastic wrap.
5. Preheat oven to 375°F.
6. Bake soufflés on a baking sheet in lower third of oven until puffed and surfaces are cracked, about 20 minutes.
7. Top soufflés with sauce and serve immediately.