Kidney beans and other beans such as pinto beans, navy beans and black beans are known scientifically as Phaseolus vulgaris. They are referred to as "common beans". It is available in small as well as big sizes, hence purchase as per the need.Just as its name suggests, the kidney bean is shaped like a kidney. A dried kidney shape bean that is reddish brown in colour, strong flavoured and has a slight mealy (powdery) texture. The beans have a strong musky and nutty aroma and a full, chewy taste. The skin is thick and has a slightly sweet aftertaste. This deep red, kidney-shaped bean is used a lot in Mexican cooking and in India is flavoured in some Punjabi dishes where the beans are known as rajma