A bit of post-commentary Googling indicates the general she mentioned, Hao, seems to feature in an Aang era story post the main series, though the summary of that doesn't fully match up to what we do know about her past (admittedly not a whole lot, but I'm still guessing it served as inspiration a bit more than groundwork.)

>The danger is in the dosage. A guy drank something like a gallon of
>soy milk a day for months, and started having hormonal shifts.
>

True, anything in enough quantity can become a problem. I was mostly trying to be humorous about somewhat sharing the Scarlet's opinion of licorice, if for vastly different reasons. Clearly that didn't hit the mark.

>Magic, sure. Time travel? Maybe not so much.
>

I didn't think the letter was time traveling, just some light teleportation to ensure prompt delivery where ever the intended recipient might be in the world.

	-={(Astynax)}=- "The magical, and reliable, equivalent of that old parcel service Guaranteed Overnight Delivery."