What brand of dog food should I feed my grandma?

Recently my grandma has asked me to buy her food that's a bit more richer in flavour, currently we've been feeding her Chum brand dog food but she's been skipping her meals because she doesn't like the taste of it. She's realy old in her mid 80's and she needs to eat to keep her strength up. A friend of mine suggested Optimum brand dog biscuts, which we could give to her in a bowl milk so she can have more calcium in her diet. Can someone please tell me some good brands of dog food that taste nice? much appreciated