In a small sauce pot over medium heat, scald the milk and heavy cream together until tiny bubbles appear around the edges. Allow to cool for 10 minutes.
In an 8-cup measuring cup, whisk together the eggs, sugar, salt, nutmeg, vanilla, flour and melted butter until smooth.
Add the cooled, scalded milk mixture to the measuring cup slowly, whisking until smooth.
Pour the custard mixture into the pie shell. Bake for 35 – 40 minutes and the custard is firm, but slightly jiggly. It will set up as it cools.
Once cooled, decorate the top of the pie with sliced strawberries and blueberries, topping with whipped cream for a red, white and blue celebration!