Here you go - Green Tomato Mincemeat
Grind 1 peck green tomatoes, drain off juice and add as much water as there was juice.
Add:
4 lbs. sugar
2 lbs. raisins
2 Tablespoons cloves
2 Tablespoons cinnamon
2 Tablespoons allspice
2 Tablespoons salt
1 cup vinegar (I use 1/2 vinegar & 1/2 water)
6 sour apples ground or finely chopped
Boil until thick and can in glass jars.
Also have recipe for Sweet Green Tomato Pickles if you are interested.