The night before baking, prepare a biga (preferment) dissolving the yeast in warm milk and adding 90 g of strong flour and let it rest overnight into the fridge covered.
Also the night before baking, heat up the milk with the cinnamon stock, the rum, the orange zest and a tablespoon of orange blossom (optional) until it boils. We will need 120 g of the milk for tomorrow’s Three Kings' Cake. Preparing it the day before we are looking to have the best flavor of the ingredients.
Mix the biga (first dough we let rest into the fridge) with the rest of the ingredients: milk, eggs, flour, sugar, yeast and start kneading.
Keep kneading until you have a nice dough with all the ingredients and start adding bit by bit the butter while you knead.
Knead the dough for at least 20 minutes until you have a nice dough that doesn’t stick to your hands or the kitchen aid.
Cover the dough and let it rest for an hour, it will double its volume.
Knead with your hands for 2 minutes the dough and form a ball.
Let the ball rest for 10 minutes. This way will be easier to form your Three Kings' Cake. Now form a big ring and place the filling and the “surprises” in the inside of the dough (optional).
Let the ring rest on your baking tray covered for another hour.
Preheat your oven 180º Degrees Celsius (350º Fahrenheit)
Brush your Three Kings' Cake with beaten egg and decorate with pearls sugar, almonds, candied fruits and the ingredients you like.
Bake for 30-40 minutes until it browns in the outside but still fluffy.
Let it cool and enjoy your Three Kings' Day.