i haven't had indian food made by brits before, but i wouldn't be surprised if this is true. when eating out at indian restaurants in the us, i mean, it's okay. i wouldn't say the food is bad. and if i'm too lazy to cook that night and don't want to get fast food, it's an option. but when i actually make indian food myself, it's goated. my own butter chicken is one of my favorite recipes. i assume it's because i don't cheap out on the ingredients, though, while the restaurants are just trying to hit a profit margin and know that most of the white people eating there can't tell the difference. no matter how good the curry is, if the chicken doesn't hit right, it throws the whole thing off.
United States