[GrannieAnnie]

Just found another one, although not tried it out yet!

Heinz type tomato ketchup

One 6-ounce can tomato paste
1/2 cup light corn syrup
1/2 cup white vinegar
1/4 cup water
1 tablespoon sugar
1 teaspoon salt
1/4 teaspoon onion powder
1/8 teaspoon garlic powder

1. Combine all ingredients in a medium saucepan over medium heat. Whisk until smooth.
2. When mixture comes to a boil, reduce heat and simmer for 20 minutes, stirring often.
3. Remove pan from heat and cover until cool. Chill and store in a covered container.
Makes 1 1/2 cups.

Perhaps try it leaving the sugar out?  If preserving qualities not so good with out sugar or with sweetners, what about freezing in small containers instead of bottling?

[1st time veg grower]

Would the fruit sugar you can get in a supermarket be an alternative?

I wondered that too - you're supposed to be able to use much less as its far sweeter than 'normal' granulated sugar.

[mumofstig]

It's still sugar...it doesn't matter whether it's fruit, beet or cane............it still gives the same 'sugar rush' to the blood.