3 lbs of potatoes (1360 g), washed and sliced to about 1/8"-1/4" I kept the skin on but you can peel your potatoes if you please.
3.5 cups (590ml) Heavy whipping cream
1.5 tsps (8g) sea salt (based on how salty your cheese is)
1/2 tsp (1g) freshly grated nutmeg (or 1/4 tsp of dry nutmeg)
1 tsp (2g) freshly grated black pepper
2 cups (170g) grated extra sharp cheddar cheese
1 cup (80g) freshly grated Parmigiano Reggiano cheese