The term "main ingredient" refers to the crucial element that comprises the majority of a dish or product. Synonyms for this phrase include "key component," "primary element," "core ingredient," or "fundamental part." Other synonyms for "main ingredient" may include "central ingredient," "dominant factor," or "primary factor." These terms can often be used interchangeably and may vary based on the context in which they are used. Regardless of the specific terminology, the main ingredient is typically the most important part of a recipe or product, and it is often what defines the overall taste and quality of the final product.