BBQ Beef Brisket Sandwiches

Mix celery salt, black pepper, salt, garlic salt, and onion salt in a small bowl; add Worcestershire sauce.

Spread mixture over beef brisket; transfer to a slow cooker.

Cook on Low until beef is tender, about 8 hours.

Transfer beef to a cutting board; shred into small pieces using 2 forks.

Measure 1/2 cup cooking liquid from the slow cooker into a saucepan.

Mix in Russian dressing and barbeque sauce; bring to a boil.

Combine shredded beef and sauce mixture in the slow cooker.

Cook on Low until flavors combine, about 1 hour.