Apple Marmalade

Directions

1. 1
   Quarter unpeeled orange.
2. 2
   Remove seeds.
3. 3
   Slice orange to thick slices.
4. 4
   In a large kettle combine first three ingredients and 2 cups water.
5. 5
   Bring to a boil and simmer 10 minutes.
6. 6
   Add sugar and bring to a rolling boil, stirring constantly.
7. 7
   Continue cooking and stirring until thickened and clear.
8. 8
   Remove from heat and add Certo.
9. 9
   Skim off the foam. Pour into hot, sterile jars and seal.