Recently, I picked some rhubarb from my mother's garden.  As usual
I removed the leaf and the bottom of each stalk with a knife.
However, as I wasn't going to use them until the next day, I decided
to pop them into a glass of water to stop them drying out. Overnight
something quite strange happened - the ends of each stick split
into a number of pieces and curled back, as shown in this photo:

After stewing, the rhubarb tasted completely normal, but I've no
idea why rhubarb would put on such a strange display!