@SunnyBlue:
Tsukasa doesn't asked people about "how his dish taste" because he has the upmost confidence in his own skills as a chef. It's a little bit arrogant but he's the first seat. I personally feel asking people about "how the dish taste" is a common courtesy so him not doing there is a bit off putting for me.
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Honestly, my biggest problem with Tsukasa is him working alone in the kitchen because he's too scared and paranoid about staff's making mistake. I have no idea how he managed to run his restaurant for the past 5 days. Even with 3 table, there will be a maximum of 9 people which equal 81 dishes! He will be getting different batches of customers in a day so he will making more. Also, he will be serving them at different interval which can be hard to keep up after a while. Soma ran into that problem when training in Shinomiya's restaurant. Not to mentioned, the arrangement of his dishes will take some time.
While he has confidence in his own skills, he doesn't seem to have confidence in others. That annoy me. The part where he nervously told the waiters to carry the food properly to the customers pissed me off. It's already Day 5, I think they know how to serve the dishes without messing the arrangements! Have some confidence in their skills as waiter. =.=
Even if Tsukasa don't trust others to do the cooking or arranging the dishes, he could have at least hired some to do prep work or washes the plates. Seriously, someone has to do the washing up.
How is he going to run a restaurant once he graduate?!
Even Shinomiya trusted his staff to follow the recipe. Of course, he ruled them with an iron fist…
I feel you're not putting enough emphasis and understanding on what it means to be the First Seat.
He's not just #1. He's #1 in a highly prestigious, highly competitive school which threatens expulsions at every corner. His position comes with tons of resources, authority and privileges and there will be plenty aiming for his spot most likely. Even some of the other nine member in the Elite Ten. Food Industries and big name people all around the world will have their eye on him as well. One of those curry sisters was willing to pay big money just for the 7th Seat.
Someone like him needs to show absolutely confidence in his skill even if it goes into the realm of minor arrogance and conceit. Not just because his skill is worthy of it, but possibly because he feels he can't show self-doubt and weakness. There is a lot of pressure on him and what it means to be the First Seat.
Sure he doesn't have confidence in others but lets be real, how many people in the school do you think can actually match up to the skill of the First Seat and prepare his dishes at his same level? The only people who could are most likely the other member of the Elite Ten and I think each one has their own pride enough to not work under each other's booths. Also any mistake that happens will reflect mostly on Tsukasa. (He most likely has people washing the dishes for him but it just doesn't needs to be mentioned).
Lastly, remember that unlike Souma, he has managed to make it to his final year of his education and clawed his way up to #1. If he wasn't capable of handling three tables of three then he probably would've gone down to two or one tables but he's someone that isn't stupid and knows his ability and can handle three tables clearly.
Shinomiya trusted his staff with the recipe _after he beat it into their heads and proved his recipe was superior._