Ash is actually something that isn't added, it is produced with the way cat food is made - will have to find the proper explanation to that though, but I do remember reading it on another forum a while back. IT is scandalous what the meat content in cat food actually is, I use HiLife and Natures Menu with a bit of Perfect Fit - not as high meat wise, but high fibre wise, which Molly needs (although they do have some Whiskas at the mo, as Tiger didn't like the HiLife pouches, and it took me a while to get Natures menu - bought 8 boxes at PAH on Sat though!! Good job as she was sick after Whiskas again tonight). I wouldn't feed cats too many purely fishy meals though, esp not if you have males, and defo not if they are prone to cystitis. Also, I dont know where you are buying your HiLife from, but the RRP on them is only something like 39p - but those pouches are complimentary, you need to feed a complete dry wtih them as well. Morrisons had the tins of HiLife pate at 4 for £1 last week, and Asda do HiLife Cherish pouches at 4 for £1 - they are made specifically for Asda and one other place, and the other tins that are 4 for £1 are made specifically for 2 other places. You can order the full range through their online suppliers though.