Who perfected commercialized instant coffee for Nestle?

The individual who perfected commercialized instant coffee for Nestlé is Max Morganthaler. His work involved significant advancements in the production process to ensure that the instant coffee could retain flavor and aroma, making it appealing to consumers. Morganthaler's methods contributed to the widespread acceptance of instant coffee as a convenient beverage option.

In contrast, the other individuals mentioned had significant roles in the coffee industry but in different contexts. Jerry Baldwin, Zev Siegel, and Gordon Bowker are known for their contributions to the craft coffee movement and the establishment of Starbucks, but they were not involved in the commercialization of instant coffee for Nestlé. Their efforts focused more on the quality and specialty aspects of coffee rather than on instant coffee production.