Is there a difference between lima beans and butter beans? Well yes and no.
Phaseolus lunatusis are the beans in question. They are a seed but are considered a vegetable. They are known by many names including: lima bean, butter bean, sieva bean, calico bean, and Madagascar bean.
The term butter bean originated in the southern United States, so local lore and regional preferences have confused the situation over the years.
But in truth, lima beans and butter beans are essentially the same bean. There may be slight differences in named varieties, but the species remains the same.
For culinary purposes (which is all we really care about anyway), lima beans and butter beans are distinctly different, the former being small and green, the latter large and yellow.
The difference is partly how they are cooked, and partly how they are harvested. Lima beans are picked young and green. They are allowed to dry before cooking. Butter beans are often the same vegetable only larger and more flat because they are allowed to get to full size. They are cooked while still fresh and then butter is added to the beans, thus the name and the color.






