Homemade Ketchup

1 can (28 oz) crushed tomatoes
1/2 cup brown sugar, packed down
1/2 cup apple cider vinegar
1/2 tsp salt
1/4 tsp celery seed
1/4 tsp garlic powder
1/4 tsp onion powder
1/8 tsp allspice

Put everything in a large heavy saucepan, set on low burner and simmer slowly for about 45 to 55 minutes, stirring frequently. The mixture will reduce and thicken.

When mixture looks and tastes right to you (adjust seasonings if desired) remove from burner and allow to cool slightly.
Pour ketchup into clean jars and let cool completely, then put on tight fitting lids.

Keep in refrigerator. Ketchup will need to be stirred or shaken up before each use.