Portsmouth academic develops 'perfect espresso' formula - BBC News
A team of mathematicians and physicists say they have the formula for consistently good coffee.
Mathematicians and physicists might not be the first people you would think to consult about the perfect coffee.

But a team of researchers including Dr Jamie Foster, a mathematician at the University of Portsmouth, is challenging conventional espresso wisdom.

They have found that fewer coffee beans, ground more coarsely, are the key to a more consistent drink that is just as strong.