One hypothesis is that a triangle allows you to take your first two bites from the two 45° corners. These only have crust on one side and give faster access to the middle of the sandwich where the filling is most concentrated.
This story is from the February 2024 edition of BBC Science Focus.
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This story is from the February 2024 edition of BBC Science Focus.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
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