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| russet potatoes: 4 whole potatoes |
| salted butter: 1/2 cup |
| all-purpose flour (unsifted): 1/2 cup |
| salt: 1/2 tsp |
| white pepper (ground): 1/2 tsp |
| 2% milk: 6 cups |
| sour cream: 1 cup |
| green onions - spring or scallion (chopped): 1/2 cup (thinly sliced) |
| cheddar cheese (shredded): 1 cup |
Credit: Food.com