5 ounces (150 grams) semisweet or bittersweet chocolatechopped
1/2 cup (1 stick) (113 grams) unsalted butter, cut into pieces
2 tablespoons (15 grams) cocoa powder
1 cup (200 grams) granulated white sugar
1 teaspoon pure vanilla extract
3 large eggs
3/4 cup (95 grams) all-purpose flour
1/4 teaspoon salt
3/4 cup (125 grams) semi-sweet chocolate chips (optional)
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