The distinctive taste of Reese's peanut butter wasn't a calculated formula but an accident. When H.B. Reese's first batch of peanuts for his new candy was over-roasted, he discovered that burned peanuts actually created a better-tasting peanut butter. This highlights how operational mistakes can lead to product breakthroughs.

During economic downturns, consumers treat small luxuries like lipstick or premium shampoo not as discretionary wants, but as psychological necessities. These "emotional staples" exhibit the same reliable demand as traditional consumer staples like bread, making them a surprisingly recession-proof category.

The surging demand for high-end advent calendars is a modern example of the 'lipstick effect,' where consumers seek small, affordable indulgences during economic uncertainty. Brands leverage this by offering a daily 'taste of luxury,' turning these calendars into a major retail phenomenon and reliable revenue stream.

The Reese's brand might not exist without Milton Hershey's unique management style. Instead of stifling an employee's side project, Hershey encouraged H.B. Reese to develop the peanut butter cup, with the only condition being that he use Hershey's chocolate, demonstrating a powerful model of fostering intrapreneurship.

The bottling contract fixed Coke's price at a nickel. While a long-term liability, during the Depression this became a powerful weapon. Coke's massive scale allowed it to remain profitable at that price point, while smaller competitors with higher costs were crushed, unable to compete with a superior, cheaper product.

Brands perceived as "corny" or "outdated" can be highly successful. They cater to a massive, loyal market that tastemakers and the "chattering class" often ignore, proving that broad appeal can be more profitable than being "cool."

The recession acted as a tailwind for e.l.f. As consumers sought value, major competitors launched expensive drugstore lines that failed. This created a market vacuum and opened up precious retail shelf space for e.l.f. to fill.

The 124-year-old candy brand Sweethearts stays culturally relevant by crowdsourcing new messages annually. This year's phrases like "split rent" and "share login" directly tap into the current economic anxieties of its customer base, turning a simple confection into a timely cultural commentary and generating buzz.

Kroc convinced a partner to price a new milkshake at 12 cents instead of a simple dime. He correctly argued the slightly higher, less convenient price point would signal to customers that the product was special and worth more, differentiating it from ordinary drinks on the market.