If you want to can unpickled vegetables, soup stocks, beans, or any non-acidic food, you’ve got to use a special piece of equipment called a pressure canner. Seriously, this is the one rule about canning that you’ve really got to get right for safety reasons.
Other foods, including fruit, sweet preserves and pickles can be safely canned in a boiling water bath without special equipment.
Each brand of pressure canner is slightly different, and you definitely want to read through the manufacturer’s instructions carefully before using a new pressure canner for the first time. The instructions that follow apply to pressure canning in general. Hopefully they will demystify the process for you.