金柑為芸香科金柑屬多年生常綠小喬木。果實顏色金黃美觀，又名「金棗」或「金橘」。因金柑性喜冷涼，而蘭陽平原東瀕太平洋，三面環山，冬春淫雨，氣候陰濕，適合此物生長，使宜蘭成為全台灣唯一的金柑特產地。金柑皮堅肌細，色如黃金，可生食，惟大部分經加工後出售。在本草綱目中記載，金柑氣味酸甘溫無毒。可潤喉，生津解渴，使口氣芬芳，幫助消化。

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Kumquat, a small, perennial evergreen tree belonging to the Rutaceae family, is renowned for its golden and beautiful fruit, earning it the name "golden orange" in Chinese. Thriving in cool environments, kumquats find an ideal habitat on the east side of the Lanyang Plain, facing the Pacific Ocean and surrounded by mountains on three other sides. The region's  rainy and damp winter and spring seasons create perfect conditions for kumquat cultivation, making Yilan the primary production hub in Taiwan.

Kumquats have a firm and fine skin, the color of gold. They are not only enjoyed fresh, but are also widely processed before being sold. Described in the Compendium of Materia Medica, kumquats are noted for their sour and sweet flavor, coupled with a non-toxic mild nature. Consuming kumquats can help moisturize the throat, stimulate saliva production to quench thirst, leave a fresh mouthfeel, and facilitate digestion.