Make a kind of "Orange-cello"
Substituting oranges for lemons:
Wash the oranges well.
Zest the peel off around 10 oranges with a zester. Don't grate. Try to avoid the white pith.
Put the zest in a large jar, cover with a liter of good vodka. Put the lid on loosely and let it sit in a cool dark place for a week.
After a week, combine 3 cups of white sugar with 4 cups of water and bring to a boil. Do not stir. Boil for 15 minutes, then cool mixture to room temp.
Stir the vodka mixture into the syrup. Strain into glass bottles and seal the bottles with a cork.
Let the mixture age 2 weeks at room temp.
Then put the bottles in the freezer until icy cold before serving.
Store in the freezer.