Lemon Custard Pie

 Ingredients: 

Unbaked Pie crust
1 cup of sugar
1 cup of milk
1 lemon citrus
Lemon zest
2 eggs, separates
1/2 cup of butter
3 tbs flour

Custard:
Mix in a bowl, the sugar and butter,, add yolks, stir well, add flour, and milk gradually, add lemon and zest. Set aside.
In a different bowl, beat the egg white until stiff, then stir in the lemon mixture, gently fold the mixture together. Until incorporate well, add all the mixture into  the pie crust. Bake for 60 minutes in 150•C.

Serve for 4