- vegetable-oil cooking spray
- 4 large egg whites
- 1/4 teaspoon cream of tartar
- 1/2 cup superfine sugar
- 1/3 cup cake flour (not self-rising)
- 1/4 teaspoon salt
- 1 teaspoon freshly grated lemon zest
- 1/4 teaspoon vanilla
- 1 teaspoon poppy seeds
- four 3- by 1 1/2-inch stainless-steel entremet (pastry) rings
- Garnish: 1 1/2 teaspoons confectioners' sugar
- Accompaniment:Lemon Syrup
- Preheat oven to 350°F. Set rings on a baking sheet and lightly spray insides with cooking spray.
- In a large bowl with an electric mixer beat whites until frothy. Add cream of tartar and beat until whites just hold soft peaks. Beat in superfine sugar, a little at a time, and beat until whites just hold stiff peaks. Sift flour with salt over whites and gently fold in with remaining ingredients.
- Spoon batter into rings, mounding batter, and bake in middle of oven until golden brown, about 20 minutes (cakes will fall slightly during baking). Transfer rings on sheet to a rack to cool. Run a thin knife around edges of rings and gently remove cakes, transferring them to plates.
- Dust cakes with confectioners' sugar and spoon syrup around them.