It's important for everyone to know what white foam comes out when you rub the end of a cucumber; it will be mind-blowing
- bySudha Saxena
- 06 Mar, 2026
Amazing Facts: You may have read many interesting facts about fruits and vegetables on social media. But today, we're going to tell you an unheard-of fact about cucumbers.
Amazing Facts: The festival of Holi brings sugarcane and cucumber sales to market. Both are popular with everyone, from children to adults, and from adults to the elderly. Of these, we'll specifically mention cucumber, which is incorporated into people's diets in various ways. Exercisers also enjoy it, and even gluttons who eat their fill enjoy it after seasoning it with chaat masala and lemon. You may have noticed that before slicing a cucumber, its tip is rubbed vigorously for two minutes. Various reasons are offered for this. However, it's worth noting that when the tip of a cucumber is rubbed, a white, foam-like substance emerges...what is this? If you're curious, we'll tell you today what the white, foam-like substance that emerges from the tip of a cucumber is rubbed.
How much water is inside a cucumber?
Cucumber lovers must be curious to know how much water is in a cucumber. If you're curious, a handle called Pkfoodies Cooking Show on the social media platform Facebook has answered this question. The caption of the post claims that cucumbers are 95 percent water, which helps keep the body hydrated.
Why is the tip of a cucumber rubbed before cutting it?
Myrna Davidson shared this on a Facebook group called The Official Quarantine Cookbook. The post claims, "Cut off the stalk end, then rub the two cut ends together. This will release cucurbitacin, a substance found in cucumber, which is responsible for its bitterness." However, it's common knowledge that rubbing the end of a cucumber before cutting it removes its bitterness.
What white foam comes out when you grate cucumber?
It's worth noting that the white substance that comes out when you rub the top and bottom of a cucumber is called cucurbitacin. This is a natural enzyme. Many people believe it's a chemical, but it's not; it's a bitter juice found in the tips.
Disclaimer: The information provided in this story is based on claims made on social media and in reports. News Crab does not verify the authenticity of any claims.
Image Source : FREEPIK & FB/@MYRNA DAVIDSON





