My mother used to make carrot marmalade, which was wonderful. Here's her recipe:
4 c. (2 1/4 lb.) prepared cirus & carrot mixture, 7c. (3 lb.) sugar, 1/2 bottle Certo
To prepare citrus & carrot mixture: Grate rind & dice pulp of 2 med. oranges. Squeeze juice from 2 med. lemons. Cook about 2 lb. carrots til just barely tender. Drain, chop fine or grind. Combine fruit, rind, lemon juice & carrots. Measure 4 c. into a very large saucepan.
To make marmalade: Add sugar to fruit in saucean & mix well. Over high heat, bring to a full rolling boil & boil hard 1 min, stirring constantly. Remove from heat & at once stir in Certo. Then stir & skim alternately for 5 min. to cool slightly. Ladle quickly into clean, sterilized canning jars. Top with paraffin or process to seal.