In a food processor, add the ancho chile powder and pour in 1 1/2 cups boiling water. Cover with a lid to steep.
Next, add chopped tomatoes, garlic, vinegar, brown sugar, oregano, salt, cumin, cinnamon, pepper, and allspice to the food processor and process to make a smooth purée. The consistency should be like BBQ sauce or ketchup.
If the mixture looks too thick, add some water to thin it out.
Place a skillet on medium-high heat and heat oil in it. Pour the chili vegetable purée into the skillet and bring to a boil.