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Why oil and water mix in mayonnaise: an egg yolk coats every droplet
Oil and water refuse to mix, yet mayonnaise is about two-thirds to four-fifths oil and holds its shape on a spoon. One egg yolk does the work: its molecules…
Egg yolk sets at a lower temperature than the white. So why is it runny?
An egg yolk sets at about 70 °C. Most of the white needs about 80 °C. So why does a soft-boiled egg come out with a firm white and a runny yolk? Because…