Walter loves peanut butter and jelly sandwiches. This simple meal is often the textbook example for complements in consumption. There are a variety of items that are often consumed alongside other items. When the price of one complement increases, it negatively impacts the consumption of the other.
Family meals are a great chance to see all the different complements and substitutes in a market. While milk and cereal are often consumed together (complements) there are other options people can decide upon to fulfill their breakfast need. Walter Jr opts for eggs and bacon (substitutes). The decision process involves weighing costs and benefits of alternatives.
There’s a lot of different complements and substitutes that go into a meal. Fries and ketchup are complements, while sushi and burgers are substitutes. The collective decisions we make are influenced by a variety of different products and aren’t isolated to a single market.
Even drug manufacturers love peanut butter and jelly. This video clip shows Walter preparing himself a peanut butter and jelly sandwich. The two items are often the most common examples used when discussing complements in consumption.