Tomato Ketchup - cooking recipe

Ingredients

1 gal. tomatoes, strained
1 qt. vinegar
3 Tbsp. mustard
3 Tbsp. bell pepper
1 tsp. ???
1 tsp. cinnamon
1 tsp. mace
1 tsp. spice
1 tsp. cloves
3 tsp. salt
1 c. sugar
1/2 c. chopped onions

Preparation

Cook until real thick.
Stirring some while cooking.