*Semi-sweet. -- Beat egg yolks until lemon-colored. Add salt and Baileys. Cook in top of double boiler until yolk mixture thickens. cool. Beat egg whites until stiff. Combine egg/Baileys mixture, egg whites, and 2/3 of the Kool Whip, using a folding motion. Fold in 3/4 cup of the nut meats. Scrape into a baked pie shell. Cover with remaining whipped topping. Sprinkle with remaining nut meats and chocolate shavings. Freeze for 4 hours (no more than 8, though).