Make the meringue: In a medium bowl, beat the three egg WHITES. Add the lemon juice and a tiny pinch of salt. Begin beating slowly at first, which will produce small, stable bubbles. After a minute or so, increase the speed and beat until soft peaks form. Beat in 6 tablespoons of superfine sugar, 1 or 2 tablespoons at a time until stiff peaks form, which will several minutes. If you don't have superfine sugar, you can make your own by grinding granulated sugar in a food processor until very fine. This will make about 4 cups of meringue.