Preheat oven to 150°C. In a saucepan, heat oil on medium and sauté the onion with the pinch of salt and the rest of the garlic until starting to turn golden. Add remaining ingredients and bring to a simmer. Reduce for about 5 minutes. Process with a stick blender, then baste ribs in sauce so it is covered and reduce the rest for the glaze (you should be reducing more than half the amount). Wrap completely in foil.