Vegetable oil, for poaching and sauteing
1/2 cup diced country ham
3 new potatoes, sliced 1/4-inch thick (about 1 1/2 cups)
1 homemade or store-bought refrigerated 9-inch pie crust
2 to 3 cups dried beans, to use as pie weights
4 large eggs, slightly beaten
3/4 cup half-and-half
Pinch kosher salt
1 teaspoon black pepper
1 cup grated aged gouda
1 green onion, chopped