Seems to be different ideas among collectors as to what the pot was meant to contain. Some think eggs, others say sauces , gravy or even brandy.
The name of this piece comes from it's overall shape. Here's a clue: the stand was meant to look like three crossed branches or twigs with rope holding them together.
The name of this piece (from the book) includes a group of people who would have used this device. The name also includes a different name for the pot.