Put all ingredients in a saucepan and bring to the boil briefly. Then let everything simmer for at least 20 minutes because of the onions. Then continue to simmer until the desired consistency is achieved.
Then pour the sauce into airtight jars and store in a cool, dry place. The sauce will keep for at least 4 weeks.
Notes: I use mason jars and even boil the sauce down after filling it. In my experience, this increases the shelf life to at least one year. Chill naturally after opening.
The quantities are intentionally all in ml. I use special spoons for tablespoons and teaspoons, which contain the corresponding ml.
We not only use the sauce for grilling, but also for french fries or other fried foods. It is also a hit on burgers, of course. Just like in baked beans or other Western stews
Also ideal as a gift and practically a must as a souvenir at barbecue parties.
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