Well I am surprised, thank you mattrom (hope the dogs enjoyed their walk, when you wrote that there was a full moon here!) for setting such an interesting phrase and to Mr A., ixion and Les for the votes.
I've just watched/listened to the clips and agree with GK, lovely
jus seems to me to come from the drizzle school of cookery, to be avoided if possible. I thought I'd put an "a" before "sinecure" but was rushing to go out.
Until next week