Caviar or finger lime originated from Australia, famous around the world for its rarity and expensive price. This fruit has now been successfully grown in Vietnam.
Finger lime (scientific name: Microcitrus australasica) is a species of flowering plant in the citrus family, one of six species of lemons native to Australia. 
Lemon caviar has different characteristics from normal in their leaves and flowers are very small. The height of the acorn tree is about 2-7m, the leaves are small, 1-6cm long and 3-25mm wide. 
Flowers are white with petals 6-9mm long. Fruit cylindrical, sometimes slightly curved, 4 – 8 cm long. The peel is thin, has many different colors such as yellow, pink, green, burgundy, purple… Lemon shrimp has the same shape as salmon roe, succulent. 
Caviar lemon shrimp can separate like grapefruit, looking exactly like caviar. Many people also call this “caviar in the lemon family” because of this similarity. 
Not only has the effect of creating flavor, the lemon cloves also make the dish more eye-catching and scrumptious with the appearance of colorful pearls, used for decoration. 
Caviar lemonade has a sour taste that is not much different from regular types, many people think is a combination of yellow lemon and regular lemon. Can be used for cooking, making jams and pickles. If eaten with fresh seafood such as sushi and sashimi can bring out great taste. 
Caviar lemon peel can be dried and used as a spice. Due to the high demand for this type of lemon, many places put caviar in mass cultivation, farms growing all over France, California (USA). 
Perrine and Etienne Schaller were the first two French to grow lemon caviar commercially. They create many different varieties with diverse colors, sour taste, characteristic aroma. Breeding sources are selected from nature. 
Lemon caviar is usually grown by grafting or sowing seeds. The expensive value is also due to the difficulties in growing acorn lemons and the relatively low yield. 
This type of lemon used to have a time of near extinction because of humans. When the Europeans invaded Australia, they cut down a lot of acorn lemon trees to make room for agriculture and livestock, making this tree almost missing. 
This lemon variety has been successfully grown in Vietnam. Specifically, Ms. Duong Thi Kim Duyen in Ben Tre is considered the first person to grow acorn lemons in our country. 
Duyen said that although this type of lemon has tiny fruit, the price is more than 3 million VND/kg, which is nearly 100 times more expensive than normal fresh lemons. Please watch the video: The strangest shaped trees in the world. Source: Happy and healthy every day
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