Rubbing the Ends All you need to do is thinly cut off the last part of the stem or blossom end of the cucumber and with that piece rub the end of the cucumber in a circular motion. While you do this, a white foam-like substance will emerge from the inside of the cucumber.

How do I make cucumbers bitter?

Rubbing the Ends All you need to do is thinly cut off the last part of the stem or blossom end of the cucumber and with that piece rub the end of the cucumber in a circular motion. While you do this, a white foam-like substance will emerge from the inside of the cucumber.

What causes bitter tasting cucumbers?

The actual cause of bitterness in cucumbers and other gourds, like zucchini, is due to a compound known as cucurbitacin. This compound is always present in cucumbers, but the levels change based on the growing process of the vegetables. The higher the level of cucurbitacin, the more bitter the cucumber.