Research the product Mayonnaise from an economic standpoint (include supply and demand, cost). Describe what has been happening in the product market over the last year or two. Find a balance between explanations, data, and statistics provided. Next, discuss trends in the CPI during the same period. Analyze underlying reasons for changes in the overall Consumer Price Index and how inflation, income, unemployment, or other economic events are affecting the numbers overall and in the product category. 

How is consumer behavior changing concerning the product discussed? 

What other products would be impacted by consumers' economic decisions? As a conclusion, analyze how businesses reacted to changes in consumer behavior. Explain it using economic terminology.