Mix together the dry ingredients in a large bowl

Place the milk and syrup into a glass measuring jug and heat in a microwave on high power for 30 seconds until just warm. Stir well

Add the milk and syrup mixture to the dry ingredients along with the egg, melted coconut oil and zest of the orange

Stir well until it comes together into a dough, then, using your hands knead until smooth

If using the chocolate chunks, add them to the dough now and knead evenly through the mixture

Divide the dough into 8 pieces and roll into balls

Place each bun onto a lined baking tray, leaving some space between them to allow them to rise

Boil the kettle and pour boiling water into another baking tray to approx. 1cm deep

Place the tray with the boiling water into the bottom of your oven, then place your buns on the shelf above. Close the oven door and leave for 1 hour

Once the hour is up, remove the buns from the oven and turn it on to 200 degrees/180 degree fan/gas mark 5

Either pipe the flour paste into a cross shape on the buns, or drizzle it over in a cross pattern

Once the oven has got to the correct temperature place the buns in the oven (the tray with water in will still be in the bottom of the oven...leave it there) and bake for 20 minutes