Soup – Fixing a beef broth with too much celery seed

With such a random collection of ingredients, I'm hesitant to suggest anything lest it conflict with one of the flavors. With that in mind, add extra ingredients a little at a time to make sure it doesn't go overboard or taste jarring with something already in there.

Suggestions to improve the flavor:

• Celery salt or celery seed (preferably ground). Fresh celery is normally part of the mirepoix in veg soup, but it's probably not a good idea to add to a cooked soup, so we're adding the next best thing. It is amazing the difference celery can make.
• White wine vinegar (for acidity and a richer flavor, and pairing with the cabbage and onions)
• Dry vermouth or white wine. Some flavor compounds are more soluble in alcohol than water, so this can help bring to the front additional flavors that are already present but undetectable.
• A jigger of sherry or cooking sherry (the latter has salt, so add it before salting the soup). This is a common suggestion when serving canned soups to guests, to make the soup taste fancier.
• Rosemary, thyme, and parsley flakes/stems (adds aromatic and herbal flavors)
• Worcestershire sauce (use carefully, it's potent stuff) -- this adds umami and spiciness
• Paprika and a pinch or two of cayenne -- adds warmth and back heat, and smokiness
• Dijon mustard (use sparingly). Adds front heat and a little richness to the soup
• A little more salt and pepper
• Parmesan or parmesan rind (for the rind, plan on simmering for a long time to extract flavor). Self-explanatory here.
• Balsamic vinegar -- adds sweetness, acid, body, and umami. Use caution, it may conflict with the cabbage here.

It's down to what the chicken ate while it was alive. Saturated fat sets, olive oil sets if you chill it, but not otherwise, and a number of seed oils do not set (rapeseed for instance). When you make a stock which has solidified fat on top, that's saturated fat, so I'd hazard a guess that the stock where the fat doesn't set means a healthier eating chicken, because it contained less saturated fat to start with.

UPDATE: Thank you to the person who bothered to do the research and said my answer 'might have some merit'. Chickens are no different from human beings - the fats you put in are the fats floating round your bloodstream and depositing in various places; think about corn fed chickens, where the fat composition is slightly different, not to mention the colour of the flesh itself. That will be a partial explanation; when taken together with the fact that not all chickens, even in the same flock or brood, get to eat the same diet, because the pecking order dictates that some free range birds don't always get the pick of the food, explains differences in chickens from the same supplier. Of course, if you can come up with another explanation, I'd be delighted to hear it...

UPDATE 2: Perhaps I should have been clearer. I am not for a moment suggesting that the fats eaten are deposited in their original form, but if you know anything about biology (chickens or otherwise) then you'll know that certain synergies occur, depending what's put in, which change the composition of any fats deposited within the body system. Hence the connection between eating lots of saturated fat and having high cholesterol in humans, for example.

UPDATE 3: Rumtscho: Can't find any scientific evidence so far to prove this theory regarding chickens, but, for interest's sake, and to prove how much of a difference it can make, farmed salmon in Britain no longer has a balanced omega 3/6/9 ratio, as it should do, and still does in the wild. It's because the feed had to be changed, and the consequence of that has been a much higher level of omega 6 in particular. I'm still looking for something on chicken.

UPDATE 4: Now I've had time to look properly, it's not at all difficult to find scientific evidence, there's plenty of it. There's a study carried out by The American Society for Nutritional Science in 2000 comparing the fat deposition (and other metabolic processes) between chickens fed the same diet, but one lot with saturated fat included in the form of tallow, and the other lot with polyunsaturated fats. The fat deposition in the birds fed tallow was greater, and the composition of the fat contained more saturates compared to the polyunsaturated group. These results reflect previous studies (Sanz et al 1999 and 2000).

Effectively, it's like everything else - you get back what you put in.