So, coming back to update results...
The liquid version turned into one big, soft jelly mass when it cooled. I used a hand mixer and beat it for a couple of minutes and it is back to a normal detergent type consistency. Just a heads up for none making it, maybe best to let it cool in a bucket so it is easy to beat back to a liquid if necessary. 5 minutes of work to fix, no big deal.
I did a load with it yesterday. Some of the clothes were heavily stained with vegetables (carrots and green beans). Used a bar of Fels as a stain pretreatment, set for half an hour, then did the load with 1/4c of tne liquid detergent. All of the clothes came out stain free and unscented, which is important in our home as there is some skin sensitivity to detergents with added scents.
Laundry department relayed that it was a great success!