And they did not want to give up the old menu, even while adding new dishes.

So, over the years, Mr. Sehgal has added regional dishes to his menu.

First he added new pastries and main dishes, drawn largely from his Russian heritage.

He is adding dishes from that region to the menu, like lasagna with pesto.

The menu has grown as the restaurant has added new dishes to keep up with the evolving American palate.

And Marylou's has added dishes from the diet to its menu.

Brandywine plans to add to its menu hearty dishes like choucroute from Alsace in France.

They even went a step further, splitting the geographical distance between their heritages and adding Spanish dishes to the menu.

As more customers told waiters that they needed to finish lunch quickly, the restaurant added dishes, like grilled fish, that took less time, he said.

For these, all the chefs work together to constantly add new dishes, which means there is always a certain renovation of the menu.