I tried whisking the whole mixture again to thicken it, but could tell it wasn't going to work.
So I had a BRAINWAVE to spoon it into little paper cups, to enable them to hold shape while baking.
I then made the chocolate ganache, and sandwiched the macaroons together with it.
They didn't look like the glossy photo in the baking book, but they tasted absolutely heavenly.
And everyone at work loved them.
As I had lost some of the mixture when I first tried to spoon it onto the baking sheets, I only got 12 macaroons. Luckily there were a few people off today so I didn't need that many, but nonetheless I felt I should bolster my offerings with something else. I didn't have the energy to begin baking anything else from scratch and remembered I had half a Bishop's Cake in the freezer.
I defrosted that, cut it into 9 pieces, and we managed to have a merry little feast after all.