Hi,
In regards to the missing flavor and the overload of the sense of smell when cooking the dishes, I think unfortunately it is a red herring.
My reason for saying this is that when I started training in the restaurant here making the base gravies, I would start at 2:00pm, cutting onions for the first hour, then making the gravies for the next 3 hours.
Around 6:00pm things start getting busy and depending upon how much is going on, I will either be grabbing ingredients for the chef or cooking the dishes myself, under his watchful eye. As part of my training the chef would get me to taste the dishes while we were cooking. And I can say that even after standing in a very small shop where there is no separation between the kitchen and the front counter, the dishes tasted perfect and smelt perfect, even after cooking very large amounts in a very confined space.
Admittedly when I got home my wife says I stink of curry and fried samosas etc, but I can't smell it, but I could certainly taste how the curries were supposed to taste, and smell how they were meant to.
The bases are full of spices, no such thing as mixed powder, it is similar in process to Ashoka whereby multiple gravies are made which have a large amount of spices and are then mixed to make different dishes, with only a sprinkle of spices at the cooking stage. Ie for Chicken Tikka Masala, butter gravy is used along with a pinch of black pepper and methi, onion and capsicum, and a little cream. A Rogan Josh is a mix of onion gravy, butter gravy, tamarind, pinch of mace powder and a little sugar and salt. Madras is mustard seeds, curry leaves, chili powder, onion gravy, coconut milk powder and a pinch of salt. Butter Chicken is nothing more then butter gravy, pinch of salt, pinch of garam masala, cream and methi.
As much as I have learnt from working in the restaurant, I have also learnt that it is sometimes so much more enjoyable to go and pay the $40 for 4 dishes locally and sit back and enjoy them thoroughly rather then spending 4-6 hours making the base gravies and dishes.
Cheers,
Mark