Depends what food you're talking about
Beijing food does not have a main ingredient. Anything could be the main ingredient. It depend on the food.
The main ingredient of the food products can be determined by having a look at the recipes.
Squid......
I think they like curry ....
salad and fruits
The Main Ingredient with Bobby Flay - 1996 Comfort Food was released on: USA: 9 October 1997
The Main Ingredient with Bobby Flay - 1996 Food and Wine Entertaining was released on: USA: 3 September 1997
Cheese isn't a main food ingredient because it doesn't have an appeal like other food groups do. It is more like a complimentary food.
Wheat is the main food eaten by most of the Pakistanis as basic ingredient of their diet. Rice is also very common food of Pakistanis.
Food ingredients are listed from most to least by weight. The first ingredient is the main ingredient. Any ingredients listed in () are the ingredients found in the ingredient preceding the ().
The shake's main ingredient is milk.
The main ingredient in yoghurt is milk.