Today we decided to put up some butter in pint sized jars. During our last trip to Costco we picked up 8 pounds of unsalted butter to add to our pantry. There are lots and lots of opinions on canning butter, so please look into it extensively and form your own opinion before you do it. We sterilized all our jars and lids and re-pasteurized our already previously pasteurized butter during this process.
After the butter is in jars with the kids secured you will need to frequently shake the jars as the contents will separate. You can see the separation in the second picture below. We were shaking to combine the contents every 10-15 minutes for several hours. We continued to shake until the color was returning to normal. This morning, as seen in the last picture, the butter has solidified and has its usual appearance. The 8 pounds of butter yielded 10 full pints. In the future I hope to work out how much butter is required to fill an even 12 pints.