Jiro is selfish and egotistical
At first I thought he was such a humble hard working man but by the end I saw him for what he really is - selfish and egotistical. He states that he continues to work because he would have nothing else to do and can't sit idle. Find a hobby or volunteer! His son has been sitting in his shadow for decades waiting to officially "take over" while the son is doing all the work and the father gets all the accolades. His son is the one who goes to market every morning and does all the prep (with his staff) in the background while his father stands out in front taking all the credit - he even said 95% of the work is already done when it comes to him. The three star award he "won" should have actually gone to his son. How his son keeps himself from slipping something into his father tea is beyond me.
I felt really badly for the older son when asked if he was jealous his younger brother got his own restaurant. I noticed he didn't answer the question - he just said it's tradition for the eldest son to take over from the father. Not that the father cares about tradition; his behavior at his parents grave was appalling - "I don't know why I'm here, they never helped me anyway."