Peel and quarter onions and put into Thermomix bowl with garlic clove, salt and oil. Process for 4 seconds/speed 5. DO NOT OVERPROCESS.Cook for 8 minutes/Varoma/REVERSE/speed 1.Add soy sauce, vinegar, sugar. Mix 2 seconds/REVERSE/speed 2.Cook 14 minutes/100°C/212ºF/REVERSE/Soft Stir with measuring cap off the lid.Allow to cool and store in fridge. (Flavor improves as the onions cool.)