Invert to release cake, then tip back into pan. Pierce cake top all over with a fork and pour hot lemon sauce over surface. Serve hot or warm; cut from pan or serve from a platter. *** LEMON SAUCE *** In a 1 1/2 quart pan over high heat, stir lemon peel, lemon juice, and sugar just until sugar is dissolved. Use hot. ~ Yvonne Visteen, Portland, Oregon.