The lemon is a small evergreen tree native to Asia. The tree's ellipsoidal yellow fruit is used for culinary and non-culinary purposes throughout the world, primarily for its juice, though the pulp and rind (zest) are also used in cooking and baking.
The juice of the lemon is about 5% to 6% citric acid, which gives lemons a sour taste. The distinctive sour taste of lemon juice makes it a key ingredient in drinks and foods such as lemonade which is available in variety like tetra pack Lemon juice or V-Pak or Aseptic Packets .
Lemons were the primary commercial source of citric acid before the development of fermentation-based processes and One educational science experiment involves attaching electrodes to a lemon and using it as a battery to produce electricity.
The juice of the lemon may be used for cleaning. A halved lemon dipped in salt or baking powder is used to brighten copper cookware. The acid dissolves the tarnish and the abrasives assist the cleaning.
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