Cooking
Yes, this single part of Breath of the Wild deserves its own section. Because simply hunting down animals and veggies won’t cure Link for much. You’ll have to cook what you find to really get the most out of it. The meat roasting over a fire was instantly reminiscent of the Monster Hunter series, right down to Link pulling the seared steak out of the campfire before it was burned too badly. The cooked steak will heal significantly more than a raw one, a difference of three or four hearts in the E3 demo.
But the real star of the show is the cooking pot, a separately placeable item that allows Link to mix different foods together to increase their healing properties, or create something with completely different effects altogether. An example used several times in the demo was the mixing of several vegetables and meat to make a meal that not only healed Link fully, but gave him extra hearts that stick around until he loses them.