I guess I don't follow the fad, but I do make chicken stock 2-3 times a year, usually 3+ gallons at a time. I just save all my chicken carcasses in the freezer until I have 3-4 (or just bones if we had thighs or whatever). Put them in my biggest stockpot in an evening after work, cover with water, simmer till bedtime.
Then I strain off the liquid, cover & set it out to cool overnight (yeah I'm totally lax about pathogens. I'm going to can it anyway.) Put the bones & stuff in 1-2 crockpots, depending how much I have, again cover with water. At this point, I usually add whatever veggie bits I've got in the freezer. Might be some chopped celery or carrots, I think I've got some leeks in there right now. Usually when we have leftover raw veggies in the fridge and it looks like they won't get eaten before they go bad, I just chop & freeze for stock.
Anyway, I let that second "batch" go in the crockpot on low overnight. In the morning, I strain off the liquid again. Put last night's liquid in the fridge, and set this new hot liquid with a lid out to cool. Fill the crockpots with water one more time, and let it go till I'm home from work that night. Again, old liquid goes in fridge, new liquid sits out to cool. Then it too goes in the fridge. By this time the bones are basically mush, and I throw them out.
The third day, I scrape all the hardened fat off the various containers of liquid in my fridge, pour them into 1-2 huge stockpots, heat to boiling, and ladle them into jars for pressure canning. Since the first batch is the most "potent," I try to mix my batches in the stockpot(s) and ladle from both pots into each jar to try to make as homogenous a jar as possible.
I don't put salt in, because I assume I'll salt whatever I'm making with the stock as necessary.
I don't DRINK it, but I make soup, rice...lots of things, using chicken stock as the liquid. Turkey stock is my favorite. But often I just make "poultry" stock, because it might have chicken and turkey both, one time I had some duck bones in there. It's all good.
Yeah it's a bit of work, but I only do it a couple times a year and can enough stock to last many months. And since it's made from my own leftovers, it's only costing me the energy to make, and a jar lid. The "good" stock from the store costs ~$3.99 a quart! So if I estimate that I use 8 gallons a year, that's over $125 in savings. (Minus energy costs & lids. Since most of the cook time is spent in a crockpot, I expect energy costs are minimal.) And I know what's in it, and I usually use free-range chicken, so I can feel good about what I'm eating.