Update: this no longer works as of version 1.2.0, only 1.1.2.

I've watched so many videos about dupe glitches and patch hacks and they all seem so confusing, but I was able to do this one very easily.

And it's so much easier than grinding in the tundra for hours on end.

And it works in 1.1.2

Setup:

0. Make sure you have the Mount Lanayru tower unlocked
1. Get 2 unfused weapons
2. Get 2 Gourmet Meats

• if you don't have any, the area around the tundra stable is good, focus on white foxes and wolves, although you can one-shot all animals in the head easily in this region by jumping off a horse and going into arrow-time

Create the meat-weapon cube:

3. Take out a gourmet meat, drop it and fuse it a weapon
4. Repeat for the 2nd weapon
5. Fuse the two meat-weapons together
6. Autobuild another pair
7. Fuse the green ones to the not-green ones, you should now have a row of 4 gourmet meat weapons fused together.
8. Autobuild and fuse another row of 4, making 8
9. Autobuild and fuse another set of 8, making 16
10. Autobuild and fuse a set of 4 meat-weapons, making 20.
11. You should now have something resembling a cube of gourmet meat weapons in your autobuild history. Save this as a favorite.

Get to a consistent fire in a very cold place

12. Fast travel to the mt lanayru SkyView tower.
13. Glide to the southeast and go to the spring of wisdom.
14. Find the treasure hunter nearby with a fire.
15. Sit by the fire till night (you may have to light the pile of wood to do this)
16. Continue to sit by he fire till night until you see fog. This means it's cold enough to freeze the gourmet meat.

Glitch 999 Frozen Gourmet Meats

17. Open the auto build menu and select the meat-weapon cube, but DO NOT BUILD IT
18. Just hold the purple formation in the air for about 4-5 seconds.

if you're using zonaite to build the formation you're doing it wrong!

19. 20 frozen gourmet meats will materialize.
20. Press B to close the purple auto-build meat formation and pick up all the meat.
21. You can do this until it stops being cold enough or you reach 999 frozen gourmet meats
22. If it stops being cold enough, sit by the fire till night until you see fog again.

Sell the Frozen Gourmet Meats

23. Go sell the 999 frozen meats for about $39k (it's in the cooked food section, not items like raw gourmet meat)
24. You can repeat this as many times as you want. I'm not sure if there is a limit to how much money you can have, but I'm pretty sure 39k is enough to buy everything for sale in the game at least once. And 100k is probably more than you'll ever need.