This recipe is for a 10-inch tube pan.
            
              Preparation:
        
            Have all ingredients about 70°F (21°C). 
            Preheat oven to 325°F (165°C).
        
         
          
            Directions:
         
          - Sift twice:
        
         
          
          
            
              - 2 1/4 cup sifted cake flour
              
- 3 teaspoons double-acting baking powder
              
- 1 teaspoon salt
            
 
- Beat in a large bowl until pale:
          - 5 egg yolks
   
 
- Gradually add and beat:
        
         
          
          
            
            
        
        
         
          
- Fold in and beat:
        
         
          
          
            
              - 1/2 cup vegetable oil
              
- 3/4 cup water
              
- 1 teaspoon grated lemon rind
              
- 1 teaspoon vanilla
            
 
- Add the dry ingredients all at 
            once and beat until smooth:
        
         
          
- In a separate bowl, beat until 
            foamy but not dry:
        
         
          
          
            
            
          
        
         
          
- Fold the egg whites into the 
              flour mixture with spatula, not with an electric beater. Fold in 
              gently until the color is uniform. 
        
         
          
          
            
          
        
         
          
- Pour it into an ungreased tube 
              pan.  Smooth the top and bake at 325°F (165°C) for 1 hour and 10 minutes. 
              Reverse the cake pan to cool the cake.
        
         
          
          
            
          
        
         
          
- Wait until cooled to take it out 
            of the pan.