2, the oven temperature: my home the highest temperature of the oven is 230 degrees, set the upper and lower heat, 60 minutes. (This time refers to the size of the groundnut in more than 2 two, if the size of the groundnut is small, it will be reduced to 50 minutes on it).
When it's time, you pinch it with gloves, and if it's soft in the center, it's ready; if there's a hard center, then you have to bake it for another 10-20 minutes. If you like the oil, you have to bake it for a little longer, this will vary from person to person, I prefer to eat the oiled groundnut, that will be sweeter.