For the people at the farmers' market, zucchini isn't the same unless it's sautéed with mushrooms. In terms of zucchini, mushrooms are what type of good?

 

Ans  In terms of zucchini, mushrooms are complimentary good.

Complimentary goods are those goods which are consumed together. Complimentary goods have negative coefficient of cross price elasticity. When price of a good decreases, then demand for complimentary good increases. Some other examples of complimentary goods are: 1. Tea and sugar, 2. Bread and butter, 3. Car and petrol, 4. Pen and paper.