Summary

Ingredients

• 3 large onion (s), red
• 200 ml port wine
• 100 ml soy sauce
• 60 ml olive oil
• 25 ml balsamic vinegar, dark
• 2 tablespoon sugar, brown
• some pepper

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Instructions

1. Peel the red onions and cut into thin slices.
2. Mix together the port wine, soy sauce, olive oil, balsamic vinegar, brown sugar, and pepper.
3. Combine the sliced onions with the marinade and leave to marinate for 2 hours.
4. Transfer the entire mixture to a pan and reduce over medium heat until a syrupy consistency is achieved.
5. Freeze in larger quantities in advance if desired.