There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
caliche, hardpan
(noun) crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
Source: WordNet® 3.1
hardpan (countable and uncountable, plural hardpans)
A distinct layer of soil that is largely impervious to water.
synonym of dry lake.
• pan
• Pradhan, pradhan
Source: Wiktionary
Hard"pan`, n.
Definition: The hard substratum. Same as Hard pan, under Hard, a.
Source: Webster’s Unabridged Dictionary 1913 Edition
10 April 2025
(adjective) capable of being extinguished or killed; “an extinguishable fire”; “hope too is extinguishable”
There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.