[Wisdom that's helpful for daily life] 1. Use onions to use the remaining oil after frying You've hesitated because it's a waste to throw away the oil left over from the frying and it smells like food when you use it again. There's a way to use the oil with the smell of food cleanly. If you cut the onion into small pieces and put it in the used oil, it catches the smell of the food. 2. Drink rad..