This recipe is for a big brioche, but don't be afraid, if it gets dry you can always make torrijas.
600g flour 00 type
5 eggs + 1 egg wash
40g fresh yeast
Mix the warm milk with the yeast and dissolve the sugar and salt.
Add this mix to the flour, add the eggs and leave 30 mins to rest.
Add the butter to the flour mix and work until a smooth and shiny dough.
Rest for another 30 mins.
Work the dough until light and flexible and divide in balls.
Grease the brioche form (you ca use what you want...I used a normal oven bake one) and leave 1 hour to rest in a warm place until it doubles its size.
Turn on the oven to 200ºC and when it's warm bake the brioche 10 min at 200ºC and then reduce to 180ºC and bake for another 20mins.