Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
4         large         navel oranges
3/4       cup           orange juice concentrate -- (thawed)
2         cups          water
3         teaspoons     orange zest
1         teaspoon      lemon zest
2         cups          orange juice
1/4       cup           lemon juice

Preparation:

Cut oranges in half and carefully scoop out insides. Save "shells" for serving sorbet and juice for later use in recipe. Combine OJ concentrate, water, and zests, and boil for about 5 minutes, until slightly thickened. Chill in fridge or freezer. When cool, add orange and lemon juices. Fill each orange "shell" with sorbet and freeze.