Corned Beef Irish Feast

INGREDIENTS

• 1 (3 pound) corned beef brisket with spice packet
• 1 cup brown sugar
• 4 (12 fluid ounce) cans or bottles Irish stout beer (such as Guinness®), or more if needed
• 1 quart beef stock
• 1 onion, peeled
• 2 cloves garlic, peeled
• 2 bay leaves
• 12 whole black peppercorns
• 2 pounds red potatoes, quartered
• 1 (16 ounce) package carrots, cut into sticks
• 1 head cabbage, cut into wedges