A fast-food burger has to taste the same — and cost the same — thousands of times a day at restaurants across the country. Zachary Crockett mans the fryer.

• SOURCES:
  • John Karangis, vice president of culinary innovation at Shake Shack.
  • Walter Zuromski, owner and chief culinary officer of the Chef Services Group.

• RESOURCES:
  • "How Shake Shack’s New Test Kitchen Is Shaping the Future of the Brand," by Stefanie Tuder (Eater, 2018).

• EXTRAS:
  • "Truffles," by The Economics of Everyday Things (2023).

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