Sour Cream Raisin Pie

• 1 cup sour cream
• 3/4 cup sugar
• 2 eggs, lightly beaten
• pinch of salt
• 1 teaspoon ground cinnamon
• 1/4 teaspoon ground cloves
• 1/2 teaspoon ground nutmeg
• 1 cup chopped raisins
• 1/2 cup chopped pecans
• 1/4 teaspoon vanilla extract
• sweetened whipped cream (optional)
• 1 unbaked 9-inch piecrust