Kumquat

Eaten whole, peel and all

Kumquats are the only common citrus where the peel is meant to be eaten — and where the peel is sweeter than the flesh. The result is a small oval fruit you pop whole into your mouth, getting:

1. A burst of sweet, fragrant peel oils
2. Then a sharp tart hit from the small amount of juice inside

The contrast is what makes kumquats genuinely addictive eating — like a citrus version of a sour candy.

A Chinese New Year fixture

In Chinese culture, kumquat trees are popular Lunar New Year decorations. The Chinese name 金橘 (jīn jú) sounds similar to the words for “gold” and “luck,” and a fruiting tree symbolizes prosperity.

Hong Kong and Singapore households often display small kumquat trees at New Year, and giving a kumquat tree as a gift is a wish for the recipient’s good fortune.

Robert Fortune’s namesake

The name “kumquat” comes from the Cantonese “kam kwat” (golden orange). The genus Fortunella (now reclassified as Citrus) was named for Robert Fortune — the Scottish botanist who introduced kumquats and many other plants from China to Europe in the mid-1800s.

Fortune’s missions were partly horticultural and partly industrial — he was the same botanist who smuggled tea-plant seeds out of China to break the Qing Empire’s tea monopoly.

Marmalade and liqueur magic

Because the peel of kumquats is so flavorful and sweet, they make the most concentrated marmalade of any citrus. A jar of kumquat marmalade has 3-4x the citrus character of orange marmalade, with fewer kilos of fruit.

Italian and Greek liqueur traditions also include various kumquat-based spirits — typically infusions of whole kumquats in neutral grain alcohol with sugar, producing a deep amber digestif served cold after meals.