Pirate StewPirate Stew

1 pound beef stew meat, cut into 1-inch pieces
3 tablespoons all-purpose flour
salt and ground black pepper to taste
2 tablespoons olive oil
1 small sweet potato, chopped
4 small potatoes, chopped
1 celery rib, chopped
1 turnip, chopped
2 parsnips, chopped
2 tablespoons balsamic vinegar
1 tablespoon butter
1 small onion, chopped
3/4 cup pineapple juice
1 tablespoon Worcestershire sauce
1/4 cup brown sugar
1 teaspoon crushed garlic
1 cube beef bouillon
3 tablespoons rum