Yema Cake

Ingredients

• 1 cup plain flour
• 2 tbsp cornstarch
• 1/2 tsp salt
• 1 1/2 tsp baking powder
• 3/4 cup sugar
• 4 eggs seperated
• 1/4 cup oil
• 1/4 cup water
• 2 tbsp lemon juice
• 1/4 tsp cream of tartar
• 1 can condensed milk
• 1 can evaporated milk
• 2 tbsp cornstarch
• 1/4 cup butter and 4 egg yolks
• 1/2 cup grated cheddar cheese