Coffee Cloud Cake

Directions

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   Stir coffee into water until dissolved. Cool. Heat
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   oven to 350 degrees. Sift together flour, salt and baking powder. In
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   large bowl, beat egg whites with cream of tartar until mounds
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   begin to form, then add 1/2 c. sugar, 2 tablespoons at a time,
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   continuing to beat until very stiff and straight peaks are
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   formed. Do not underbeat. In large bowl, beat egg yolks until
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   blended. Gradually beat in 1 1/2 cups sugar and vanilla. Now
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   beat at high speed until thick and lemony colored. To this
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   mixture, add flour mixture alternately with coffee. Fold in 1
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    cup nuts. Fold in stiff egg whites, 1/4 at a time, using no
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    more than 15 strokes each time. Pour into ungreased 10-inch
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    tube pan. Bake 60 to 70 minutes.