To use this cat food, simply open the can and serve it to your cat. You can put it in a clean cat bowl. You can serve it at room temperature, or if your cat prefers, you can warm it up slightly in the microwave (just make sure to stir it well and check the temperature to avoid burning your cat). As this product is going through a packaging change, don't be surprised if you get either the new or old package. Store any unused food in the fridge and use it within a day or two. Keep the cans in a cool, dry place away from direct sunlight. This food is great for your cat's health due to the added fish oil and high - quality meat, so it's a regular meal option for your furry friend.