What type of meat dog food can i mix with royal canin?

my puppy dogue de bordeaux X mastiff eats royal canin big breed puppy food, DO NOT judge as its done her wonders!! i dont care about your shitzu or pug being ill from it, or your chiuaua.. the food has done my dog wonders, so i will be sticking to it, DO NOT winge on my question if you think the food is bad, or did you wrong because i dont really have the time to read your comments! i just want to know which is the best meaty tinned, or non tinned foods to mix with the kibble to make it more delicious for my pup? thanks alot