I think I did see it somewhere Susanne, will rack my brains for that one - it was an internet site though, and I remember being pleased that they did Senior food.
Re the broth - I woudn't use it cos of the salt content, and if you add water to dry food, you have to be careful as it can go off as quickly as wet food can. I would get some samples to see if he likes something else, but if he happily eats enough wet, I wouldnt be too concerned - just dont let him eat too many dog biscuits, they dont have enough nutrients.