Armchair Expert with Dax Shepard

Podbit · Armchair Expert with Dax Shepard

Grant Achatz (award-winning chef)

Explore episode Jul 15, 2026
Science
The Rotary Evaporator: Boiling at Low Heat

Grant Achatz (award-winning chef) · Jul 15, 2026 Science

A rotary evaporator pulls liquid under vacuum so it boils at very low temperature without losing its aromatic compounds — the distillate that drips out is the pure essence of whatever you started with. Achatz uses one to extract chili flavor without any of the capsaicin heat.

Where this was said

Learning From Thomas Keller at French Laundry

At 31:37 · chapter starts 29:45

After a disappointing trip to France — where every meal underwhelmed him — Achatz wrote a letter to Thomas Keller at the then-nascent French Laundry in Napa. Keller's response was typically direct: 'You're either batshit crazy or you're going to be really good.' On his first day, Achatz walked into the kitchen to find Keller mopping the floor, an echo of his parents' diner that immediately felt like home. Keller's kitchen was everything Trotter's was not: approachable, warm, humorous. The famous 'oysters and pearls' dish made Achatz laugh at the table — the first time he experienced fine dining as genuinely fun. Keller's uncompromising standards and his insistence on being first in and last out gave Achatz a model of leadership through presence rather than fear, one he credits not just with making him a great chef but with giving him the mental fortitude to survive cancer years later.

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