Sweet-and-Sour Balsamic-Glazed Spareribs

INGREDIENTS

• 1 red onion, diced
• 1 tablespoon molasses
• 1 tablespoon Worcestershire sauce
• 2 cups ketchup
• 1 or 2 teaspoons Tabasco (depending on how spicy you like it)
• 1/2 cup honey
• 4 to 6 sprigs of fresh thyme
• 1/2 cup dark brown sugar
• 2 racks spareribs
• 2 1/2 cups balsamic vinegar (don't waste your best balsamic here)
• 1/4 cup grainy mustard
• 1 can beer (preferably dry)
• 1 tablespoon minced garlic
• Kosher salt
• 1/2 cup water