Combine all the ingredients for the flank steak in a slow cooker and cook on low heat for about 6-8 hours or until the beef shreds easily with a fork. Taste and adjust any seasonings.
For easier shredding, pull the whole flank steak out of the slow cooker and use a chefs knife to chop against the grain of the meat into smaller pieces. Serve by itself or in bowls.
Notes
For Cuban beef-inspired flank steak bowls - add 1 1/2 cups cooked corn, 1 14oz can black beans, washed and drained, 2 cups cooked white rice, 1 cup chopped mango, and fresh cilantro for garnish.
Flank steak can be substituted with skirt steak or hanger steak.