Soak in salt water: Rinse 3-6 times with clean water, soak in light salt water for 1 hour, and rinse again with clean water to remove residual pesticides. Alkali washing: Add alkali powder and sodium carbonate to the water, mix well, add water spinach, soak for 5-6 minutes, and then wash with clean water. Wash with rice washing water: Rice washing water is acidic. Soak the water spinach in the rice washing water for about 10 minutes, and then wash it with clean water to reduce the residual pesticide content.

1. Salt water soaking: First rinse with clean water 3-6 times, soak in light salt water for 1 hour, and then rinse once with clean water to remove residual pesticides.

2. Alkali washing: First put some alkali powder and sodium carbonate in the water, stir well, then add water spinach, soak for 5-6 minutes, and then rinse with clean water. Baking soda can also be used instead, but the soaking time should be extended to about 15 minutes.

3. Wash with rice washing water: Rice washing water is acidic, and organophosphorus pesticides will lose their toxicity when exposed to acidic substances. Soak water spinach in rice washing water for about 10 minutes, and then wash it with clean water to reduce residual pesticide ingredients.