You can adjust with salt and sugar according to your preferences. Use my proportions the first time you make it, then change as you like. Personally, I would add more salt, but this is something each one of us can decide.
It's wonderful with grilled meat, sausages, meatballs, meat or vegan burgers etc. I also like to make salad with various pickles and this onion is colorful and gives an extra taste.