Roasted Tomato Ketchup

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1 1/2 pounds ripe tomatoes, cored and quartered and roasted

3 tablespoons olive oil, divided

1 medium onion, finely diced

2 cloves garlic, finely diced

1/4 cup cider vinegar

2 tablespoons sugar

1/4 teaspoon cinnamon

1/4 teaspoon allspice

Salt and freshly ground pepper