Crispy Homemade Nutella (Chocolate-Hazelnut Spread) Recipe

Ingredients (9)

• 3 ounces water (about 6 tablespoons; 85g)
• 4 ounces golden syrup or corn syrup (about 1/3 cup; 115g)
• 5 1/4 ounces sugar (about 3/4 cup; 150g)
• Shy 3/4 teaspoon (2.5g) Diamond Crystal kosher salt; for table salt, use about half as much by volume or the same weight
• 9 ounces hazelnuts, toasted, skinned, and roughly chopped (about 2 shy cups; 255g)
• Shy 1/2 teaspoon baking soda
• 4 ounces dark chocolate, roughly 60% cacao solids (about 2/3 cup, finely chopped; 115g), melted
• 1/2 ounce cocoa powder, preferably Dutch-process (about 2 heaping tablespoons; 15g)
• 1 ounce roasted-hazelnut oil or neutral oil (about 2 shy tablespoons; 30g); see note