Method :

1. Preheat the oven to 180 ° C.
2. In a mixing bowl or food processor, add flour, vegetable fat, butter and salt. Mixed well.
3. After a bit of lumps, add water little by little. Mix the dough until like dough.
4. Lift the dough and wrap with plastic wrap. Then put in the refrigerator for 30 minutes.
5. While waiting for the dough in the fridge, prepare the filling. In a hot pan with a little oil, add the onions. So that the smell goes up.
6. Add the chicken and stir until slightly cooked. Then, add the sausage and mushrooms. Add salt and sugar and stir until cooked through.
7. Turn off the heat of the pan and let the core cool.
8. In another bowl, add the eggs and beat well. Then add the whipped cream and fresh milk into the batter. Add black pepper, stir until well combined and leave.
9. For tart preparation, remove the dough from the fridge and knead the dough with a little flour so that it does not stick. Knead until the dough is 2-3mm thick.
10. In a quiche pan, add the dough and flatten. Excess dough can be discarded.
11. Put the ingredients on the dough and flatten.
12. Sprinkle cheese on top and pour the egg mixture. Pour evenly.
13. In a 180 ° C oven, add the quiche and bake for 45 minutes.
14. Let cool slightly before cutting.