Issue description:

Gas shown in JEI recipes does not show its amount. It should help people calculating cost and profit.

I wonder if there is any reason to add this?

This would be an awesome addition. I've had trouble knowing exactly how much I'm going to need ahead of time.

I honesly don't know why that was added. Perhaps because some of the infos aren't correct when supplied to JEI. I've done some changes locally to show them, but I'll eat my hat if I don't miss an incorrect display somewhere haha