Super fluffy Cozonac ( romanian brioche bread) for beginners!

This is not the first fluffy Cozonac recipe for beginners to be published. The classic Cozonac recipe is also for beginners, explained super, super detailed, only now that after reading thousands of comments from you, I know exactly: and what your preferences are in terms of cake dough and exactly where this recipe will cause problems . If you have never made a cake, this is the recipe for you.
Ingredients for 3 medium cakes (trays 25X11 cm):
• 1 kg 000 flour for the cake, plus a little more if needed.
• 250 g sugar
• 3 sachets of vanilla sugar.
• 15 g of salt
• 80 g of yeast, necessarily checked to be valid
• 6 yolks at room temperature
• 3 ampoules of flavors to choose from - I have here one of rum, one of lemon and one of orange
• 120 g butter with at least 80% fat
• 80 g oil
• 540 g of milk with 3.5% fat, warm
• For the filling we need 500 g of cocoa cream. I used non-boiling cocoa cream. You have the recipe on the channel. Or you can use oreo biscuit cream from the syrup cake for example.
• 150 g large ground walnuts
• And 150 g of Turkish delight cut into small pieces
• We will also need an egg to grease
For 1 Cozonac:
• 330 g of flour 000
• 85 g sugar
• 1 sachet of vanilla sugar
• 5 g of salt
• 27 g of fresh yeast
• 2 yolks at temp. room
• 1 vial of flavor of your choice
• 40 g butter + 25 g oil
• 180 g of skim milk
• 150 g cocoa cream
• 50 g large chopped walnuts
• 50g chopped turkish delight
• 1 egg for greasing
For 2 Cozonaci:
• 660 g of flour 000
• 170 g sugar
• 2 sachets of vanilla sugar
• 10 g of salt
• 54 g of fresh yeast
• 4 yolks at temp. room
• 2 ampoules of your choice
• 80 g butter + 50 g oil
• 360 g fat milk
• 300 g cocoa cream
• 100 g large chopped walnuts
• 100 g chopped Turkish delight
• 1 egg for greasing