1. Place roast in 4-1/2 to 5-1/2 quart slow cooker. Combine whiskey, 1/4 cup vinegar, tomato paste, 2 tablespoons brown sugar, molasses, salt and pepper; pour over roast. Cover and cook on HIGH 4 to 6 hours or on LOW 8 to 10 hours, or until beef fork-tender.
2. Remove roast from slow cooker; shred with 2 forks. Skim fat from sauce as needed. Return beef to slow cooker.
3. To make the slaw: Combine remaining 2 tablespoons cider vinegar, 2 tablespoons brown sugar and mustard in large bowl. Add carrots and apples; mix well. Season with salt and black pepper as desired. Refrigerate until ready to serve. Serve beef with slaw.
Test Kitchen Tips This recipe can be made in a 6-quart electric pressure cooker. Place beef roast in pressure cooker; add 1/2 cup beef broth. Close and lock pressure cooker lid. Use beef, stew or high-pressure setting on pressure cooker; program 90 minutes on pressure cooker timer. Use quick-release feature to release pressure; carefully remove lid. Shred beef; return to pressure cooker. Combine cooking liquid, whiskey, 1/4 cup cider vinegar, tomato paste, 2 tablespoons brown sugar, molasses, salt and pepper in small saucepan. Simmer 20 to 25 minutes until desired consistency is reached. Combine sauce and shredded beef. Continue as directed in Step 3. (This recipe variation was tested in an electric pressure cooker at high altitude. Cooking at an altitude of less than 3000 feet may require slightly less cooking time. Refer to the manufacturer’s instructions.)