I always have a bag of gain 28 in because I do forget to defrost the raw food for the dogs but I also use it as s mixer also. I have a local butchers where I get beef mine 5lb for £1.25 I use another place for the rest of my raw which is lamb, tripe, chicken carcus, ducks neck, heart liver etc and they also sell a few of there mixed meat packs also which is mostly a combination of two meats. I fill my freezer with mackerel thro the summer and that tends to last me all winter also.
I also like to feed all table scraps even if be a take away. Veg when ever I can and I like to chuck in