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Ingredients
For the dough:
2 1/2 cups of 00 flour
1 1/2 cups of sugar
1 tablespoon of baking powder
1/2 teaspoon of salt
1/2 cup of vegetable oil
7 egg yolks
3/4 cup of water
1 teaspoon of vanilla extract
Grated zest of 1 lemon (optional)
For the meringue:
7 vials

1/2 teaspoon cream of tartar
1/2 cup sugar
Make sure to beat the egg whites until stiff peaks form, creating a light and fluffy texture, similar to a chiffon cake. Then, gently fold in the dry ingredients to loosen the batter.

Step 1:
Preheat oven to 350°F (175°C) and position the rack in the center of the oven.

Step 2:
In a large bowl, mix together the flour, sugar, baking powder, and salt.