I made a video and took some pics of a how to make long term store butter, the video might be online tomorrow sometime.
STEP ONE YOUR NEED BUTTER AND A JAR:
STEP 2: PLACE THE JAR IN THE OVEN FOR 20 MINS.
STEP 3: PLACE JAR LID IN PAN OF WATER AND BOIL.
STEP 4: PLACE THE BUTTER IN PAN AND ON VERY LOW HEAT MELT.
STEP 5: BUTTER MELTING AND LID BOILING AND JAR IN OVEN.
STEP 6: POUR THE MELTED BUTTER INTO HOT JAR THAT HAS BEEN IN OVEN 20 MINS.
STEP 7: PLACE THE HOT JAR NOW FILLED WITH BUTTER UPSIDE DOWN INTO BOILING WATER FOR A FEW MINS.
STEP8 SHAKE THE JAR ON AND OFF FOR AN HOUR OR TWO AFTER ALL ABOVE IS DONE, I WOULD SUGGEST YOU DO MORE THEN ONE JAR AT A TIME, IT IS NOT SLOWER DOING 6 OR 12 THEN IT IS DOING JUST ONE.