Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: how pressure is regulated
Document: I would get a smaller pressure canner. I use a propane gas stove and it seems to take &#34;forever&#34; for the pressure to come up. The pressure is regulated by adjusting the heat beneath the canner. Unlike the other style pressure cooker that has a &#34;set&#34; of weights, this canner has only a single 15 lb. weight along with a pressure gauge. There is a popup button that indicates time to put the weight on the vent (you want the steam to blow through it for awhile before putting it on).
I have only used this one time. It worked well and the price was right. It is well made. I did summer squash in it and it worked well. I did them all in one batch 17 pint jars that would have taken several batches to do that many in a water bath canner  Make sure you don't go far away from the stove as you have to monitor the pressure over the entire cooking process to make sure it stays about the same. Once it got regulated that did not take too long after I placed the rocking weight on it, it did not take too much fussing with the burner temp.
However, the book says nothing about being able to turn this knob to release steam - and the regulator sits too loosely on the top to be able to turn the knob. It would definitely help regulate the pressure to release steam slowly. I plan to contact Presto to ask them about this - and look through the book one more time to be sure I didn't miss something.Ease of UseAgain, I read through the booklet carefully a few times before I used this canner. I use a gas range and found it tough to keep the pressure regulated, even when I turned the heat all the way down.
Love this pressure canner. Just the right size.
However, as a pressure canner, it works wonderfully.
As long as it stayed at or above the required pressure for the full time?
The pressure cooker is of good quality, and we are very satisfied with its performance.Cesar & Maria
I added one so now I know if the pressure gauge is correct or not.
this is a wonderful pressure cooker. Does things fast and so easy to use. The clean up is good too.
gasket tore after using 2 times. Need to keep watching it for pressure as it won't do it by itself
Answer: there is a gauge in middle along with a button (in front on picture) when the steams starts coming out of the hole where the weight goes (the black piece next to gauge) you time it for 10 mins. then put the weight on and the pressure starts to build up. Once the pressure gauge reads 10 you lower heat on stove to keep the pressure steady at 10 then start to time (usually anywhere from 10-45 mins). When you are done turn heat off and wait until the gauge is at 0 and the front button goes down. Then slowly twist lid and remove by lifting the cover (tilting the back side first so steam doesn't burn your face).