I dreamed Dr House (like from the show) was investigating the failing health of a little girl. Early on, it is revealed that she's been making and drinking something called "Rat King Tea" for when she cant sleep.
Turns out her tea concoction was just ginkgo leaves, raspberries and chamomile and was not contributing to her mysterious illness.
Googling 'Rat King Tea' brought up:
One instance of some sort of internet character saving a bunch of old tea bags (bag strings tangled together in the manner of a rat king) and re-steeping it.
And one instance of a tea blend inspired by an anime character. It did contain raspberry leaf!
Since ginko leaves, raspberries and chamomile are all things a person can consume, I have decided this is a lesser #kingshand moment and will be accquiring Ingredients™️.