The bitter taste of bamboo shoots is due to its tannins, amino acids and oxalic acid. There are several ways to remove the bitterness of bamboo shoots, such as:

1. Soak bamboo shoots with clear water and change the water every few hours. The soaking time depends on the variety and freshness of bamboo shoots.

2. Boil bamboo shoots in boiling water for a period of time, then take them out and soak them in clear water, so that some oxalic acid can be dissolved.

3. Marinate bamboo shoots with salt, vinegar or wine for a period of time, then rinse them with clear water and soak them in clear water, so as to neutralize oxalic acid.

4. Make bamboo shoots into sour bamboo shoots, and use fermentation technology to remove bitterness.

I hope these methods are helpful to you.