Make your own Ketchup?

Wha?  Yup.  So I'm on a new diet program and I can't eat sugar and in class they were talking about how much sugar ketchup has.  So I found this recipe and I hope to try it.  But I guess it doesn't matter since I can't eat anything that I usually put ketchup on, i.e. potatoes and french fries.  Oh well, here it is anyway.

1 28-oz. can tomato puree
1 medium yellow onion, peeled and quartered
1 clove garlic, crushed and peeled
1/2 fresh jalapeño, stemmed and seeded
2 tbsp. dark brown sugar
1/2 cup cider vinegar
1 cup water
Pinch cayenne
Pinch celery salt
Pinch dry mustard
Pinch ground allspice
Pinch ground cloves
Pinch ground ginger
Pinch ground cinnamon
Kosher salt
Salt and freshly ground black pepper

Put tomato purée, onions, garlic, jalapeño, and sugar into a blender or food processor and pulse until blended. Add vinegar and 1 cup water and purée until smooth.
Transfer to a medium saucepan; add cayenne, celery salt, mustard, allspice, cloves, ginger, and cinnamon. Cook over low heat, stirring occasionally, for 45 minutes. Season to taste with salt and pepper. Store in refrigerator, covered, for up to 1 month.

Recipe from Saveur

Stay hungry my friend!