How to Distinguish Male and Female Coffee Beans, and How to Use Male Coffee Beans – Do They Have a Hormonal Aroma?

FrontStreet Coffee - Introduction to Male and Female Coffee Beans

Welcome to our coffee knowledge exchange. This article is part of an ongoing series on coffee beans, origins, and brewing.

Coffee fruit contains seeds in three forms. In addition to the extremely rare triangular bean, a normal coffee cherry holds spherical seeds made up of two coffee beans joined together, with their flat faces turned inward and their curved surfaces turned outward. This common form is called a flat bean, also known as the "female bean." A small number of seeds do not split, instead presenting as a complete oval-shaped round bean, which is called a "male bean."

In reality, there is only a difference in growth form between the two, not a difference in gender. The Chinese common names can indeed be misleading.

What conditions lead to the formation of male beans?

Male beans are a variant of the coffee bean, referring primarily to the peaberry, or caracoli, with "male bean" being merely the Chinese common name. From a botanical perspective, peaberries can be considered a defect. There are two causes: one is damage by insects before the coffee forms fruit; the other may be factors such as prolonged drought or nutrient imbalance affecting the coffee tree. In addition, coffee beans growing at the ends of the branches may also show this phenomenon.

Do male beans taste better than female beans?

Some people believe that if peaberries form at the ends of the branches, they receive more adequate sunlight and heat and an exclusive supply of nutrients, making their flavor naturally more outstanding than female beans growing on the same tree. Another theory suggests that, because of their physical shape, peaberries roll more easily than flat beans, which helps improve roasting uniformity.

Because peaberries tend to be larger, they brew into coffee with a continuous fragrance and a lingering sweetness. They are relatively rare and are known as "dream coffee." It is precisely because of these characteristics that round beans are now sold as tourist products in a Southeast Asian country, commanding fairly high prices. In truth, they are not as good as they are made out to be, so be cautious when buying.

Knowledge Point

Coffee takes about five years to go from cultivation to fruiting and mass yield. Along the way, flowering, fruiting, harvesting, processing, storage, and sales all take place before we receive the raw coffee beans in the terminal market.

In Brief

FrontStreet Coffee is a specialty coffee research hall dedicated to sharing coffee knowledge with everyone. We share without reservation only to help more friends fall in love with coffee. Every month there are three low-price coffee events, because FrontStreet Coffee wants to let more friends drink the best coffee at the lowest price. This has been FrontStreet Coffee's principle for the past 6 years!

FrontStreet Coffee Recommendation

Whether you favor flat beans or peaberries, a medium roast is the easiest way to enjoy a balanced cup without straying too far toward sour or bitter. FrontStreet Coffee's medium-roast lineup is a good place to start: the FrontStreet Queen's Estate, a Yellow Bourbon from Brazil, is clean and sweet, with cream, peanut, chocolate, toast, and sugarcane notes that work for pour-over, moka pot, or espresso machine.

If you prefer a brighter, fruitier medium roast, the FrontStreet Strawberry Candy Geisha Blend combines a Costa Rican honey-process lot with a washed Panama Geisha, roasted to medium so it shows both orange-blossom honey and a rounded sweetness — excellent for cold brew, pour-over, or espresso. And for a classic example of what a medium roast can do for a famous Typica, the FrontStreet Jamaica Blue Mountain No. 1 brings chocolate, roasted nuts, cream, and caramel together in a remarkably elegant, balanced cup.