The variety of coffee or the price of coffee which kind of coffee is more affordable

The two main varieties of coffee are Arabica coffee (Coffea arabica) and Roberta coffee (Coffea robustra), also known as "sturdy coffee". In 1753 Linnaeus established the taxonomic position of Arabica coffee (Coffea arabica). The Arabica beans produced by Arabica coffee are high-quality coffee in the world and the only coffee that can be drunk without any ingredients. Arabica coffee is sometimes said to be Brazilian coffee (from Brazil) or mixed coffee (from other places). Coffea canephora, or more precisely C.canephora, var.robusta, can produce robusta coffee beans and is often used as a supplement to Arabica coffee beans. The two secondary varieties of the coffee family are C.liberica and C.excelsa, which form Lieberica beans and Exelsa beans respectively.

The two best varieties of Arabica coffee are Typica and Bourbon. But many other varieties have also come a long way, including Caturra (grown in Brazil and Colombia), Mundo (from Brazil), Tico (widely cultivated in Central America), San Ramon (a small plant) and the famous Jamaican Blue Mountain Coffee (Jamaican Blue Mountain). Arabica coffee trees are usually large shrubs with green, oval leaves and oval fruits. They generally have two flat seeds. If only one seed germinates, it is called a pea-shaped coffee bean (peaberry).

In fact, the word "robustra" comes from the most widely grown variety of Canifra coffee. "Robesta" is a sturdy shrub or small tree, more than 10 meters high, but its roots are very shallow. Its fruit is round, its ripening period is 11 months, and its seeds are oval, smaller than Arabica coffee beans. Robosta coffee is grown in west-central Africa, throughout Southeast Asia and in a more Conion region of Brazil.

The Liberica coffee tree is tall and strong, 18 meters tall, its leaves are large and tough, and its fruits and beans are also very large. Lieberica coffee is grown in Malaysia (Malaysia) and West Africa, and is produced in small quantities because of its unique taste and low demand.

At present, Arabica coffee accounts for about 70% of the world's total coffee production, but the proportion of Robesta coffee is increasing, mainly because the fruit quality of Roberta coffee is better, and it is less susceptible to diseases and insect pests than Arabica coffee.