How to sterilize wheat grains?

In a tutorial, I read that wheat should be sterilized before inoculating it with mycelium. And to do that, you have to put a closed glass jar with wheat inside in a pot and boil it. I'm afraid the closed glass jar will explode. Is there a glass jar that can be boiled with its contents completely closed and won't explode? What do you advise me to do? Should I use a special jar or is there a way to do it with a normal jar?

Any idea?

Do you have access to canning jars?

You are essentially water bath canning your wheat grains. If you use canning materials appropriately, the risk of exploding glass will be minimized.

Timothy Norton wrote: You are essentially water bath canning your wheat grains. If you use canning materials appropriately, the risk of exploding glass will be minimized.

Part of why water bath canning works is because you fill the jar to a specific level, and leave a limited amount of air. Air expands due to heat faster and to a larger volume/pressure than a liquid. (The more are the greater the chance of explosion.)

Also, when canning, normally the jars are pre-heated to reduce the risk of them cracking do to the change in temperature. If the contents and jars aren't pre-heated, I would start them in room temperature water, and bring the water to boiling with the jar already in.

Wheat grains are more of a solid than a liquid (at least in small quantities - beware of large quantities ) and they will be surrounded with air as they don't pack tightly. If I was trying this experiment, I would use a quality canning jar and I would fill it with wheat so there wasn't any more air than what was between the grains.

I would have thought that the wheat would need to be wet to be a good substrate for mycelium. Do the instructions say to use completely dry wheat?