a little bit of sweet chilli sauce, garlic granules, pepper, any spices that you like. I have added all of these, still had losses and made it more palatable to me
I add tarragon, or Worcestershire sauce. And I make it more dilute than they say (I make all of the soups with extra water, otherwise they are hideously gloopy). And I put it in a bowl and eat it with a spoon, which seems to help, bizarrely.