Place a medium stockpot over med-high heat and add the chicken stock (or use chicken broth or bone stock).
When the mixture begins to boil, stir in the grits using a wire whisk or fork until nearly all the liquid is absorbed.
As the grits thicken, add more chicken stock about a cup at a time, and repeat this process until the grits are tender and smooth.
Next, fold in the heavy cream, unsalted butter, and cheese and keep stirring until the additional ingredients are incorporated into the grits.
Add sea salt and cracked black peppercorns to taste.
Serve.