I've read the answers to this question but they focus on getting ideas written down pretty much as they occur, that's not my issue, I have both digital and analog methods for doing so with me at all times. But I can't always use them right away and I often lose the thread by the time I can. This is usually because I'm either already writing something else down or I'm on a phone call.
At the moment I have to rely on recurrence of the idea and hope I'm less busy when I remember it this time but I can't help thinking there has to be a better way. So my question is does anyone know a reliable technique for retaining an idea few a few minutes so you have time to write it down?
Please note that I really do need a technique rather than technology as if I have time for the latter I have time to write it down.