Actually, pie is pretty hard...

I make mine one batch at a time. It tastes way better than Heinz and lasts forever in the fridge:

1 6 oz can tomato paste
1/2 cup light corn syrup
1/4 cup white vinegar
1/4 cup cider vinegar
1/4 cup water
1 tablespoon light brown sugar
1 teaspoon salt
1/4 teaspoon onion powder
1/4 tsp garlic powder
1/8 tsp ground cloves

Just stir everything together and bring to a boil over medium heat. Simmer for 30 minutes, stirring often. Let it cool and then funnel it into a mason jar or glass milk jug.