Restaurants are required to serve larger proportion of local clients. The original and authentic of other regions is like too much for them. So they adapt to local palates, tweaking spice levels, sweetness, or the use of certain ingredients. Non availability of authentic ingredients also leads to substitutions.

While some lament the loss of "authenticity," But this attracts new clients to tryout different tastes . This regional adaptation has also contributed to the dynamic nature of Indian cuisine.