What's the Difference Between Male and Female Coffee Beans? Does Male Bean Coffee Have Hormonal Notes?

FrontStreet Coffee - Male and Female Coffee Beans

1. The Difference Between Male and Female Beans

The center of a coffee fruit contains a pair of symmetrical seeds that face each other to form an elliptical shape. The seeds with a flat contact surface are called "flat beans" — the so-called female beans. When there is only one round seed in the fruit, it is called a "peaberry," or male bean. Its round shape makes it very convenient to roast.

2. The Formation of Male Beans

1) Male beans generally form at the tips of the coffee tree. Because of their different position, the absorption of nutrients, light, and water is not balanced.

2) Originally there were two coffee beans, but during growth one absorbed most of the nutrients, becoming dominant at one end and forming a round bean. Because it received sufficient nutrients, the bean is slightly larger than normal, brighter in color, and slightly superior in both aroma and body.

3) If the fruit is attacked by pests or disease during its formation and development, the incomplete internal development of the seeds can likewise cause one seed to "swallow" the other, forming a peaberry.

3. Are Male Beans Definitely Better Tasting Than Female Beans?

According to popular legend, if male beans form because they grow at the tips of the branches, then compared with the flat beans on the same tree they receive more light and absorb more nutrients, so the flavor is naturally more outstanding. Others believe that because peaberries are round, they roll more easily in the roaster, receive more even heat, and roast relatively better.

Whether male or female beans taste better should ultimately be a matter of personal preference. If you usually can't drink very bitter coffee and need sugar and milk, you may find it difficult to tell the two apart at all. If you don't drink your coffee black, choosing flat beans is perfectly fine. But if you enjoy pure single-origin coffee, the more aromatic, slightly acidic peaberry is a good choice.

Generally, coffee farmers don't sort peaberries out to sell separately; they sell them mixed in. However, in Indonesia, some farmers recognized the business opportunity in the peaberry's favored taste and low production, allowing those beans to sell at higher prices.

The distinction between male and female beans may largely be marketing hype. Although in theory a peaberry might roast slightly more evenly than a flat bean, this doesn't necessarily mean its internal composition is any better. If you truly want to study the difference, you should do so with beans of the same Arabica variety and precious single origins — such as Jamaica Blue Mountain peaberry or Tanzania peaberry — but these rare beans are certainly expensive.

FrontStreet Coffee Recommendation

Since the article name-drops Jamaica Blue Mountain peaberry as the ultimate comparison bean, FrontStreet's Jamaica Blue Mountain No. 1 is the natural pick. Grown in the Blue Mountains of Jamaica from the renowned Typica variety — a prized Arabica — and aided by a privileged terroir, this "emperor of coffee" is roasted medium so that its acidity, bitterness, sweetness, and body blend into an elegant, alluring aroma: chocolate, roasted nuts, cream, and caramel from the very first sip.

If you prefer a balanced cup without extremes of sourness or bitterness, medium-roast beans are the place to start, and the FrontStreet Brazil Fazenda Rainha (Queen Estate) fits beautifully. A unique Yellow Bourbon from Brazil, the world's largest coffee producer, it is gently sweet and mellow, showing aromas and sweetness of creamy peanut, chocolate, toast, and sugarcane after a medium roast — equally good in a pour-over, moka pot, or espresso machine.