Cream butter; gradually add sugar, beating well at med. speed of an electric mixer. Add eggs, one at a time, beating after each addition. Combine sour cream and next 6 ingred. in a sm. bowl; stir with a wire whisk. Combine flour, baking soda, and salt; stir well. Add to creamed mixture alternately with sour cream mixture, beginning and ending with flour mixture. Pour batter into a greased and floured 25 cm tube pan. Bake at 160ºC or 1 hr. and 45 min. or until a wooden pick inserted comes out clean. Let cake cool in pan 10 min.; remove from