Lime Chiffon Cake
2 1/4 cups sifted cake flour
1 1/2 cups superfine sugar
1 tbsp baking powder
1/2 teaspoon salt
3/4 cup fresh lime juice
5 tbsp vegetable oil
zest 1 lime (or 2 or 3, if you really want to boost the flavor)
1 1/2 teaspoons vanilla extract
6 large egg yolks
7 large egg whites, at room temperature
Preheat the oven to 325F. Get out a 10-inch tube pan, but do not grease it.
In a large bowl, whisk together the flour, the sugar (reserving 2 tbsp), baking powder and salt. In a medium bowl, stir together in the lime juice, vegetable oil, lime zest, vanilla and egg yolks, then pour into the dry ingredients and stir until smooth.
In another large bowl, beat the egg whites to stiff peaks, adding in the last 2 tablespoonfuls of sugar when the whites begin to get foamy.
Gently stir 1/4 of egg whites into the lime mixture to lighten it. Gently, working in two additions if it is easier, fold the remaining beaten whites into the lime mixture until no streaks remain.
Pour into the ungreased tube pan and bake for 55-60 minutes, until the top springs back when gently touched.
Invert cake over a bottle (or onto a wire rack if your pan has “feet” to hold it up) and let cool completely. When cooled, run a knife around th edges and turn cake out onto a platter.
If desired, drizzle with a mix of powdered sugar, lime juice and vanilla extract (starting with about 2 cups of powdered sugar and adding enough juice to make it drizzle-able)