紫菜,是生长在浅海岩礁上的一种红藻类植物,颜色有红紫的、绿紫的及黑紫的区别,但干燥后均呈紫色。这种紫色的海生植物虽属藻类,却可做菜吃,所以取名紫菜。紫菜营养丰富,味道芳香,且药食兼优,素有“长寿菜”之称。传统医学认为紫菜具有化痰软坚,清热利尿的功效。明代李时珍 Seaweed, a red algae growing on shallow sea reefs, has the distinction of red, purple and black-purple, but all appear purple when dry. Although this purple seaweed plants algae, but can eat food, so named seaweed. Seaweed nutrient-rich, fragrant, and medicine and excellent, known as “longevity dishes ” said. Traditional medicine that seaweed has strong phlegm, heat diuretic effect. Ming Dynasty Li Shizhen