Whiskey BBQ Sauce

• 1 cup good-quality organic ketchup

• 1/2 cup tomato passata or puree

• 1/2 cup beef stock

• 3 shots bourbon whiskey

• 1/4 cup Worcestershire sauce

• 2 tablespoons light brown sugar

• 2 tablespoons cider vinegar

• 1 teaspoon coarse black pepper

• 1 teaspoon celery seed

• 1 tablespoon chili powder or hot paprika

• 1 rib celery, minced with leafy tops

• 1/4 cup grated onion

• 2 large cloves garlic, grated or finely chopped

Combine the sauce ingredients in a small pot and reduce over a low bubble for about 30 minutes.