Thanks Rick, that article was intriguing. I learned lots I didn't know there was to know!
I kept meaning to make a little note of how my first attempt at embryo rescue faired. Unequivocal failure. So I learned something. Out of 24 cultures only one was lost to contamination, but of the others, nothing grew. I found when I tried to extract embryos that they were so tiny (and my eyesight not nearly good enough*?) and the seeds quite tough, that getting them cleanly out was too difficult. I think I squashed a few in the process. Then I decided to see what would happen if I stopped mangling them and just put the immature seeds in, so I did that.
But I think it was just too late. I let the pods go too long before I tried. Problem is, I'm a dreadful planner. I look at something and think... ooohh... I better do that now, then it takes me at least two weeks to get everything I need together to do it. Instead of having it ready to go....
So, given another attempt, I would cut those little green pods weeks earlier than I did. While they still look active and juicy. Long before they look like they might have 'stopped' at some stage of development.
*I did buy one of those jewelers/gem cutters magnifying headsets, but it was painful to wear and still didn't seem to help.