To use this Whiskas wet cat food, simply open the single - serve pack and place the pâté in your cat's bowl. It's that easy! There's no need to worry about leftovers as each pack is the perfect portion for one or two servings. Just keep the unopened packs in a cool, dry place. Once opened, if there's any food left, it can be refrigerated, but remember that some cats might prefer fresh food. So, try to serve it all at once if possible. Always provide your cat with fresh water alongside the meal.