Swedish Pancakes With Aigre-Doux Sauce

Beat, until light, the yolks of six eggs; add one-half a teaspoonful of salt, one teaspoonful of soda, dissolved in one tablespoonful of vinegar, then two cups of sifted flour, alternately, with the beaten whites of the eggs, and if necessary add enough milk to make a thin batter. Pour a small ladleful at a time on the griddle; spread each cake, when cooked, with raspberry jam, roll up like a jelly roll, pile on a hot platter, dust over with powdered sugar, and serve with each one a spoonful of Aigre-Doux Sauce.