That bean is cream-colored with maroon mottling and has a flavor reminiscent of chestnuts.

NPR: Falling in Love with Limas

But it is possible to detect minute deviations in this signal, and these fluctuations - seen as mottling in the map - are understood to reflect the differences in the density of matter when the light parted company and set out on its journey all those years ago.

BBC: Planck satellite: Maps detail Universe's ancient light