Question: how long does it take to cook a 3 lb corned beef?
Answer: Follow the manufacturer's instructions for closing the bag. For a 2 to 3-pound corned beef brisket, cook for 2 1/2 to 3 hours. For a 3 to 5-pound corned beef brisket, cook for 3 to 3 1/2 hours. may be added during the last 20 to 30 minutes of cooking.