In what way is Iswaran an asset to Mahendra?

Ishwaran was a skilled cook. He Cooked for Mahendra, washed his clothes and chatted with his master at night. He would narrate various stories for him. He had an amazing ability to produce vegetables and cooking ingredients out of nowhere. Mahendra always kept him wherever he was posted. The cook was also quite attached to Mahendra and followed him uncomplainingly. That is why he was an asset to Mahendra.