Boil the milk with the lemon peel and the cinnamon stick, then let it infuse.
Heat some olive oil in a pan, and cook the anise in it for a few minutes.
Add the flour and stir well. Then pour a little bit of infused milk.
Stir and make it thicken, adding some milk a little at a time. If you get clots, blend the mix.
When all the milk has been used, add the sugar and stir until its perfectly blended to the mix. Take out of the heat.
Cut the bread into dices, and cook it in a pan with some olive oil. The bread must be grilled.
Sprinkle the custard with cinnamon, then arrange some pieces of grilled bread on it.
There you are, your gachas is ready !