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| salted butter: 1 cup |
| granulated sugar: 1 1/2 cups |
| eggs: 3 (separated) |
| all-purpose flour (unsifted): 2 cups (sifted) |
| baking powder: 1 tsp |
| baking soda: 1 tsp |
| salt: 1/2 tsp |
| sour cream: 1 cup |
| orange peel: 1 tsp (grated) |
| walnuts (chopped): 1/2 cup |
| granulated sugar: 2 Tbl |
| orange juice: 1/4 cup |
| amaretto liqueur: 1/3 cup |
Credit: Food.com