I've been a leecher for a long while now, and I'm sorry for that but everything I've come across has already been posted. I haven't heard of this exploit, and didn't find anything using the search function. First serious contribution attempt, be gentle.
It requires the ability to make hot apple cider, that's basically it. The materials for this cost 2s52c (2 per batch) you can sell two of them for 3s20c. Which means you make 68c every 3 seconds, which is 8g16s an hour. It's not much but I'd rather be making money (scam/bot/gambling free) while I'm AFK rather than just sitting there, or risk ban.
Hopefully it helps when you have laundry to do or are eating dinner or something.
Also important to note, only available now, buy as your bank can hold while the winter veil is on.
Oh, almost forgot: grab a mod like auto-profit, and add the hot apple cider to the auto sell list to make it go faster on the sell end when you are finished, Also Advanced Trade Skill Window (ATSW on Curse) allows you to set the number of ciders you want to produce and will auto buy the reagents needed.