Ingredients
4 large eggs, separated and at room temperature
A pinch of salt
1/8 teaspoon almond extract
1/2 cup sugar, in all
1/3 cup cake flour, sifted with 3/4 teaspoon bakin
½ cup walnuts, toasted and finely chopped
A 9-inch round spring- form pan

Method
Set the baking rack at the middle level of the oven and preheat the oven to 350°F. Line the spring-form pan with wax paper and grease the paper. In a large bowl, using a wooden spoon, stir the egg yolks vigorously with a pinch of salt for 30 second