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Maria Brumm is a geologist..

She reckons that

“Ice cream is an igneous rock.

You begin with a liquid slurry containing a hodgepodge of chemicals, and by bringing it below its freezing point, you create something solid – or at least solid-ish. Good ice cream or sorbet needs a little give, a bit of liquid remaining between ice crystals so that you can comfortably dig into it with a spoon.”

More on her blog.

I have no idea why Prof Dr Mr Heliospheric hasn’t been on this yet.

And Maria’s even beaten him to it with today’s thrilling episode “The Metamorphic Petrology of Ice Cream“

Of course, everyone knows that metamorphism makes a much better rock.

Or icecream….