Barbecued Brisket

Ingredients

• 4 lb. brisket
• 1 tsp. garlic salt
• 2 tsp. liquid smoke
• 1 tsp. salt
• 1 tsp. pepper
• 1 c. sugar
• 1/2 c. flour
• 1 tsp. celery salt
• 1 tsp. onion salt
• 2 tsp. Worcestershire sauce
• 1 tsp. Italian salad dressing
• 1 tsp. garlic powder
• 1 c. sour cream