The Science of Food: Steaks, Bugs and Expiration Dates

from Christopher Kimball’s Milk Street Radio · host Milk Street Radio

For a throwback, we’re looking back at one of our all-time favorite episodes—our science episode from 2020. We chat with flavor chemist Dr. Arielle Johnson about how to eat a tree, how insects use flavor molecules to communicate and the science of taste and smell. Plus, Meathead teaches us how to grill perfect steaks; J. Kenji López-Alt investigates food expiration dates; and we make a no-fuss, all-flavor Spanish Almond Cake.Get the recipe for Spanish Almond Cake here.Listen to Milk Street Radio on: Apple Podcasts | Spotify

What this episode covers

For a throwback, we’re looking back at one of our all-time favorite episodes—our science episode from 2020. We chat with flavor chemist Dr. Arielle Johnson about how to eat a tree, how insects use flavor molecules to communicate and the science of taste and smell. Plus, Meathead teaches us how to grill perfect steaks; J. Kenji López-Alt investigates food expiration dates; and we make a no-fuss, all-flavor Spanish Almond Cake. Get the recipe for Spanish Almond Cake here. Listen to Milk Street Radio on: Apple Podcasts | Spotify

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The Science of Food: Steaks, Bugs and Expiration Dates

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This episode is 50 minutes long.

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This episode was published on January 27, 2026.

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