Small Batch Retort Canning

Over the summer our little garden only produces a few tomatos, beets, carrots, and so on a day.  After we eat what we want for that day. There is never really enough left at one time to can an entire batch of sauce but far to much to consume right then. 

We use our vacuum packer to vacuum pack and freeze these small batches daily.  Then at the end of the summer when the garden is done we remove the frozen tomatos, cook them down, cool in the fridge, then retort vacuum seal and can them. 

We never waste from the garden this way and make easy work for canning retorts for a full canner batch. Then it becomes food storage for the winter months. All from our own garden or collected from the local Farmers Market. 

Here is some pictures of our Tomatillos this past summer. The picture shows them frozen just out of the freezer thus the frosty white look.

After we thaw the frozen tomatillo tomatos we will cook them down, add seasoning and cool the batch completely.  When the sauce has cooled we are able to put 16oz of the sauce in an 8oz pouch *remember retorts hold more liquids than solids*

They were then vacuum sealed in our Sammic 204T  then canned it at 10lbs of pressure for 45 minutes.  We want to make sure we start everything off cold so the entire mass comes up to heat at the same time.  We added 20 minutes to this process to make sure all bags were evenly cooked. 

This is the finished bags after they cooled to zero pressure for 30 plus minutes.  When we opened the canner the bags were still very hot but not so hot that they pushed out of the canner.  We put the hot bags in a sink of ice water. This process instantly shrinks up the retort bags and lets us see leaking bags easier.

We now have 16oz bags of Tomatillo tomatos to use in recipes until next year. 

Retort Bags vs Mylar for Canning

How does one know if they are buying actual retort bags designed for canning or Mylar bags not designed for canning? 

Although big companies have retort bags made in any size, color, shape they desire.  For those of us buying just the few hundred for our own personal use, there really is only one bag consistently on the market you can be sure is designed for retort canning.    The bag has this writing on it. It is gold and comes in 2oz, 4oz, 8oz, and 16oz no gusset, a basic flat pouch.

All other products you should ask for the specs from the seller.  There are many sellers now a days pushing foil bags in all types and colors as retort.  The concern here is chemicals in the bags that will be released with the extreme heat.  Retorts are BPA and chemical free.  Also the air barrier properties of the bag will most likely be far less than that of retort pouches thus lessening the storage time and increasing the spoilage ratio. 

Be careful when you buy if the bags do not have this FDA printing. Ask for the exact specs and information certifying it as a retort canning bag before using it. 

Retort Canning of non acid foods has NO Scientific data from the FDA or USDA for the home canner. Can at your own risk! We are expressing our experiences but by no way are these experiences authorized data.