What can result from using incorrect proportions of ingredients in sandwiches?

Using incorrect proportions of ingredients in sandwiches can lead to inconsistent taste, which directly impacts the overall customer experience. Proportions are essential in ensuring that each sandwich maintains a specific flavor profile that customers expect. When the ratios of ingredients such as meat, vegetables, sauces, and seasonings are not balanced correctly, the resulting flavor can vary significantly from one sandwich to another.

This inconsistency can confuse customers, as they may enjoy a sandwich one day but find it unpalatable the next if the ingredient proportions have been altered. In a business like Jimmy John's, where reputation is built on delivering a consistently satisfying product, this inconsistency can deter customers from returning, negatively affecting the brand's reliability.

The other choices relate to aspects of business performance and customer perception that are generally enhanced by maintaining correct ingredient proportions, but they do not address the immediate sensory impact of flavor inconsistency caused by improper proportions.