To use this Royal Canin canned cat food, simply open the can and serve it to your cat in a clean bowl. You can feed it as a main meal or mix it with dry cat food for variety. Make sure to store any unused portion in the fridge and use it within a day or two. Keep an eye on your cat's weight and adjust the feeding amount as needed. If your cat has any special dietary requirements or health issues, consult your vet before feeding. Also, always provide fresh water for your cat to drink.