Tomato Based Barbecue Sauce - cooking recipe

Ingredients

2 tablespoons oil
1 large onion, minced
3 garlic cloves, minced
2 tablespoons fresh ginger, minced
2 lbs tomatoes, roughly chopped or
1 (25 ounce) can crushed tomatoes
1 teaspoon dried oregano, crumbled
4 dried red chilies, seeded and torn into pieces (California or New Mexico)
1 cup cider vinegar
1/4 cup honey
2 tablespoons soy sauce
3 cardamom seeds
5 cloves
1 teaspoon coriander seed
1/2 teaspoon fennel seed
1 (1 inch) cinnamon stick
1 tablespoon mustard seeds

Preparation

Heat the oil in a large saucepan over medium high heat.
Add the onion, garlic and ginger.
Saute until the onion is translucent, about 5 minute.
Add the tomatoes, oregano, chile pieces, vinegar, honey, and soy sauce.
Stir to combine and lower the heat to medium low.
Grind the whole spices (cardamom, cloves, fennel, cinnamon stick, and mustard seeds) in a spice grinder or for a workout in a mortar.
Add the spices to the sauce.
Simmer, stirring frequently to prevent sticking, until the sauce is thick and tasty, up to 2 hours.
Strain sauce or put through a fine disk of a food mill.
Use immediately or refrigerate for short term use. Can also be canned.