1. white kidney beans should be soaked in water a day in advance
2. soaking thick bottom kidney beans head will rise hair a lot, the left is soaked, the right is not soaked, head twice as big as more oh
3. choose a good beef
4. cut into pieces of about 3 centimeters, soak in water, change several times, soak the blood
5. add water not over the beef to cook until it will boil, then skim off the blood
5. Add water not over the beef, medium heat and cook until it will boil, then skim off the blood foam
6. Skim off the blood foam and add star anise. Peppercorns and ginger
7. Pressure cooker after steam pressure 6 minutes, put aside and let it slowly decompression
8. Then into the soaked white kidney beans, still pressurized, after steam pressure 7 minutes
, still let it slowly decompression
9. Pressure of the meat at the same time, with a frying pan with a little oil stir frying garlic, then under the minced onion stir fry
10. Tomatoes peeled and cut into pieces under
11. Add salt, sugar and pepper
12. Stew tomatoes soft, soup red
13. Stir-fried tomato sauce poured into the stewed beef
14. Continue to stew for about 5 minutes, so that the soup can be thickened