Portion Pak is the way to go! Ready to use. Just add water. Sized for the #4008 Reddy Apple Cooker. For a #4016 Double Batch, use two pouches. Add 6 to 8 oz. of water. For the double batch, add as little additional water as you need to completely dissolve the powder. Always use a thermometer in the Reddy Apple Cooker. Be sure to stir the hottest solution off the bottom of the cooking kettle. Six bags per cs.