Angostura and Peychaud’s bitters are key ingredients in classic cocktails like the Old Fashioned, Manhattan, and Sazerac.

Shan’s team are exploring one functional component, neohesperidin, an antioxidant flavonoid molecule they extracted from bitter orange (Citrus aurantium). Blood glucose levels fell, and abnormal ...

Calling the ingredient "bitters" may be a disservice to it. To find out exactly what bitters are and why some cocktails need ...

Officials detected a fatal disease known as “citrus greening” in two trees located in residential neighborhoods during ...

Choose citrus fruit that are firm and bright-looking; dull skins and soft patches indicate fruit that are past their best. Bitter Seville oranges and spice-sharp blood oranges, hailing mostly from ...

The California Department of Food and Agriculture (CDFA) declared a citrus quarantine expansion in Valley Center on March 26, after detecting the fatal citrus tree disease known as Huanglongbing (HLB) ...

A version of this story appears in the February 2017 issue of National Geographic magazine. Citrus, in many ways, stands alone. So many cultivated species have come from so few primary ancestors.