01 -
3 tablespoons of butter.
02 -
2 diced large shallots.
03 -
Minced garlic from 6 cloves.
04 -
1 tablespoon rosemary, chopped.
05 -
1 tablespoon thyme, chopped.
06 -
3 tbsp plain flour.
07 -
2 cups of whole milk.
08 -
A cup of heavy cream.
09 -
1 and 1/2 teaspoons of sea salt.
10 -
1/2 teaspoon black or white pepper.
11 -
1/8 teaspoon ground nutmeg.
12 -
1 and 1/2 cups grated parmesan.
13 -
1 and 1/2 cups grated gruyere.
14 -
5-6 medium-sized sweet potatoes.
15 -
Foil sturdy enough for baking.