01 -
1/2 cup milk.
02 -
1/2 cup cream (pure or heavy).
03 -
1 1/2 tbsp unsalted butter (25g).
04 -
1 1/2 tbsp plain flour.
05 -
1/4 tsp kosher salt.
06 -
1 pinch white pepper.
07 -
1/8 tsp nutmeg, freshly ground preferred.
08 -
4 slices sourdough bread, 1.5cm thick.
09 -
8 slices Swiss or gruyere cheese (165g).
10 -
120g ham slices, preferably smoked.
11 -
4 tsp Dijon mustard.
12 -
30g unsalted butter.
13 -
1/2 cup grated gruyere cheese.
14 -
3 tbsp finely grated parmesan.