Many people enjoy eating various types of animal offal, but cleaning them can be quite a headache. Here are several methods for cleaning different kinds of offal:
When cleaning intestines or tripe, first add some alkali and vinegar, and knead them repeatedly to remove the internal and external mucus and bad odor.
To clean lungs, you can attach the trachea to a tap and rinse them with running water several times until they are clean and the lung lobes are white, at which point the odor will be gone.
When cleaning pork tongue, you can first soak it in boiling water or blanch it briefly in boiling water. Scrape off the tongue coating and white film, then wash it clean.
To clean a pork heart, place it in clean water and continuously squeeze it by hand to expel the dirty blood.
Livestock brains are generally very tender and can be easily damaged. They should be rinsed gently in water. Use a toothpick or small tweezers to remove blood clots and membranes, then rinse them clean again.
To remove the odor from pork large intestines, before chopping them, place the whole piece in a hot dry pan and stir-fry for a while. This allows the odor attached to the intestinal walls to evaporate slowly until you can no longer smell it. Then, remove it and rinse with clean water before cooking.
Pork liver and pork heart have a foul odor. You can rub them with flour, then rinse with clean water to remove the odor.