Pistachio, citrus and dark chocolate cinnamon rolls recipe

Ingredients

• 240 ml whole milk
• 50 g unsalted butter, cut into pieces, plus extra for greasing
• 400 g strong white bread flour, plus extra for dusting
• 7 g fast-action dried (active dry) yeast
• 1 x ¾ tsp fine sea salt
• 1 large egg, lightly beaten
• 1 amount of flavourless vegetable oil, for oiling
• 1 egg yolk, lightly beaten, for brushing