Sunday, November 1 2026

A Single Coffee Cherry Hiding Seven Beans? Exploring the Past and Present of the Multi-Seed Arabica Mutant Variety

The coffee fruit we're familiar with usually contains only two flat beans growing face to face, and the occasional appearance of a single round bean is already considered rare. But nature always breaks the rules—there is a type of coffee fruit that can nurture three, five, or even seven coffee beans, shaped like orange segments or garlic cloves. This multi-seeded coffee, named Café Polysperma, is a mutant variety of Typica, carrying Arabica lineage, with records dating back as early as 1890. Its flavor is not outstanding, but it possesses valuable leaf rust resistance genes and has been introduced into the germplasm bank of Minas Gerais, Brazil, for protection and research. Today, let's take a closer look at this little-known variety, which could be called the "alien" of the coffee world, to see just how special its flowers, fruits, and beans are, and also touch on Front Street Coffee's commitment to specialty beans. [more…]