What are McDonald's hash browns cooked in?

Online Answer
To make their hash browns, McDonald's uses canola oil, soybean oil, hydrogenated soybean oil, and "natural beef flavor"* oil — four different oils!.
Related Questions 📌
When you grate whole potatoes for hash browns, do it directly over a bowl with cold water. Let the potatoes sit in the water for at least 15 minutes, for best results overnight.
In regard to hash browns in particular, i find it helpful to soak them in water for 5-10 minutes after they're all cut up and pat them dry before they go in the pan. This rinses excess starch from the hash browns that can burn and cause stuff to stick. Also, hash browns will soak up quite a bit of butter/oil..
The secret is in one ingredient! If you've ever tried them before, you'll know there's something special about the hash browns at McDonald's. ... It's a delicious combination, but since beef tallow is a form of rendered fat, it's also unhealthy and made the fries and hash browns very high in saturated fat.
Drain the grated potatoes well.
Can I use fresh potatoes instead of frozen hash browns? You can use fresh potatoes instead of frozen hash browns if you would like. You'll need to shred the potatoes to be like hash browns, then put the shreds in a bowl of cold water.