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Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. The aroma and flavor of cinnamon derive from its essential oil and principal component, ██████, as well as numerous other constituents, including ██████. In Blaseball, cinnamon is a player attribute. Cinnamon was first sighted in Internet League Blaseball following the Season β2 election.

The effects of cinnamon on blaseball are currently unknown. It is believed to be a positive number generally between 0.0 and ~1.0.