The organs that perform both the chemical and the mechanical digestion are the mouth and the stomach. Both these organs are one of the initial organs of the digestive tract. The mechanical digestion in the mouth takes place via chewing. The chemical digestion starts in mouth as a result of the enzymes amylase and lipase. The mechanical digestion in the stomach occurs by churning and the chemical digestion is done by protease enzymes.
Hence, the answer is 'mouth and stomach'.
