First wash the rice until the water comes clear. Now place it in heavy bottom pan with enough water and place it over a medium fire. Boil for 12 minutes.
Once boiled drain and return it to the same pan, add milk, lemon rind, cinnamon stick and butter. Place over a medium flame again and bring to the boil. Boil for 5 minutes.
Now add the sugar and continue boiling for another 3 minutes. In the meanwhile separate your eggs.
Once your three minutes are over remove the pan from the fire. Add bits of rice to the egg yolks and mix quickly to warm the yolks. Once your yolks are warmer, slowly add them to the rice, stirring quickly to make sure the egg doesn't form strings.
Pour into a serving dish or individual ramekins, and once cooled, sprinkle with cinnamon powder.