What method can be used to track ingredient usage over time?

Using historical sales data analysis is an effective method for tracking ingredient usage over time because it provides quantifiable and objective insights into what ingredients are being sold and how frequently. By examining past sales figures, businesses can identify trends in customer preferences, which ingredients are popular, and how seasonality affects usage. This method allows for detailed analysis, showing fluctuations in sales that can be linked to promotions, new menu items, or changes in consumer behavior.

In contrast, while employee interviews can provide subjective insights, they may not reflect actual sales or usage patterns accurately. Customer surveys might capture current preferences but lack the longitudinal data necessary to understand patterns over time. Observational studies focus on immediate choices made by customers but do not provide a comprehensive view of ingredient usage trends across larger time frames. Historical sales data provides a solid foundation for making informed inventory and menu decisions.