Chocolate Babka Recipe

Name: Chocolate Babka Recipe
Cuisine: European, Eastern European
Ingredients: 3¾ cups (530 g/18.7oz) all-purpose flour (, plus extra for dusting); ½ cup (100 g/3.5oz) granulated sugar; 1 tablespoon (10g) instant yeast; 3 large eggs; ½ cup (120 m) water; ¾ teaspoon fine sea salt; ⅔ cup (150 g/5.3 oz) unsalted butter (, at room temperature, cut into small cubes); Neutral oil (sunflower, canola) for dressing; ½ cup (50 g/1.7oz) powdered sugar; ⅓ cup (30 g/1oz) unsweetened cocoa powder; 130 g (4 oz) dark chocolate (, melted*); ½ cup (120 g/4oz) unsalted butter (, melted); ⅔ cup (120 g/4oz) chocolate chips or chunks OR 1 cup (100g/3.5oz) pecans, coarsely chopped (optional); ½ cup (120ml) water; ½ cup (100g) granulated sugar