How to Make It
Combine first 5 ingredients in top of a double boiler. Beat at low speed 30 seconds or just until blended.
Place over boiling water; beat at high speed 7 minutes or until stiff peaks form. Remove from heat. Add grapefruit rind; beat 1 to 2 minutes or until frosting is thick enough to spread. Spread immediately on cooled cake.
Christmas with Southern Living 1995