I'm not a regular Asda shopper as it's on a retail park area about 7 miles away. Willow approves which is a good sign as she will only normally eat Hill's
There are a couple of different flavours but here's the ingredients for the one I got
Fish & Chicken (of which 50% salmon) rice, maize, poultry meat meal, fish meal, animal fat, egg powder, brewers yeast, maize gluten meal, barley, poultry digest, sugar beet pulp, sodium chloride, potassium chloride, methionine, citrus extract, yukka extract, rosemary extract.
methionine
http://www.anyvitamins.com/methionine-info.htm