The Importance of Trusting People and Confirmation

Last night, after work, I decided to go to an Indian curry restaurant. As I was thinking about what to eat tonight when my work was almost over, the menu of that restaurant, which I sometimes visit, came to my mind, and I was literally "hungry".
I always order "Pork Spinach Curry" at that restaurant in front of the station. The waiter, who seemed to be from India (or Nepal), came to take my order and asked me, "Itsumo desu ka? I couldn't help but respond, "The usual. I responded, "The usual.
It was quite a different atmosphere from that of a middle-aged man with a bitter face ordering from the bartender at the counter of his favorite bar, "I'll have the usual," I thought.
Ten minutes of waiting. The saffron rice, which is always ordered as part of the set meal, is definitely the "usual," both in color like sunflowers and in quantity. The spinach-colored roux is poured over the saffron rice.
Personally, I believe that one of the requirements for a first-rate restaurant is to offer the same taste no matter which chef is working there or when he or she is cooking. In this respect, this restaurant can be said to be first-rate enough.
Next, I try to find the pork I am looking for in the roux. It seemed to be cut into larger pieces than usual, so I decided to go all out. My first bite was a little chewier than usual.
Gradually, this turned into a suspicion that maybe the waiter's "itsumono" and my "usual" were not the same. This gradually turned into a suspicion that "this may be that the waiter's 'itsu mono' and my 'usual' did not match? While my mouth reaffirms its crunchiness and my sense of taste, my right hand uses a spoon to scoop the meat that should be my "usual" out of the roux and observe it intently.
The next moment, I was asking the waiter.
Me: "What curry is this?"
Clerk: "Mutton spinach curry desu."
Ah~, I knew it.
Even though I had been to that restaurant several times and ordered the same dish each time, I realized that it was difficult to understand each other just by saying "the usual". On the other hand, I also felt that it would be much easier if I could order with just one word, "usual. Otherwise, we would have to specify the type of curry, spiciness, naan or rice, white rice or saffron rice, and even the amount of rice each time.
As a result, yesterday's curry was not the pork spinach curry we wanted, but it was one line different on the menu, so it was a hairy near miss.
What? How was the mutton spinach curry?
Umeh~!
I don't need that!
So, from the next time, I will continue with the "usual. I think I'll order "Oh, it's pork. I think I'll order "pork" after "usual" next time. With my favorite tomato soup with garlic.