This is a walk-through of the USDA's procedure for safely home pressure canning kale.
Pack loosely into half-litre (US pint) jars or 1 litre (US quart) jars.
Processing time: half-litre (US pint) jars for 70 minutes OR 1 litre (US quart) jars for 90 minutes.
Canning kale. www.healthycanning.com