sweet potato supprise cake

Ingredients For sweet potato supprise cake

• 1 c

  vegetable oil , or coconut oil
• 2 c

  granulated sugar
• 4 lg

  egg, separated, (7 eggs for cake & frosting)
• 1 1/2 c

  hot water
• 1 tsp

  vanilla extract
• 1 c

  shredded sweet potatoes
• 1 c

  chopped pecans, or walnuts
• 1/4 tsp

  salt
• 2 1/2 c

  sifted cake flour
• 1 Tbsp

  baking powder
• 1 tsp

  ground cinnamon
• 1 tsp

  ground nutmeg
• FOR THE FROSTING
• 13 oz

  can evaporated milk, (not sweetened condensed milk)
• 1 c

  sugar
• 1 stick

  butter
• 1 tsp

  vanilla extract
• 3

  egg yolks
• 1 1/2 c

  coconut, flaked