如何制作一道美味可口的糖醋排骨？请将做法以步骤序号标注，且每个步骤单独作为一段落，每段落只包含一个句子。另外，请在整个回答中使用英文数字。1
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1. Firstly, prepare the ingredients: five hundred grams of pork ribs, one hundred grams of sugar, forty grams of vinegar, twenty grams of soy sauce, a piece of ginger, two green onions, and an appropriate amount of cooking oil.  
2. Cut the pork ribs into two-centimeter pieces and blanch them in boiling water for two minutes to remove impurities.  
3. Drain the blanched ribs and set them aside, while preparing the sauce by mixing sugar, vinegar, and soy sauce in a bowl.  
4. Heat a wok and add cooking oil, then fry the ginger and green onions until fragrant.  
5. Add the blanched ribs to the wok and stir-fry over medium heat until they turn golden brown.  
6. Pour the prepared sauce over the ribs and stir well to ensure the ribs are evenly coated.  
7. Add enough water to cover the ribs, bring to a boil, then lower the heat to simmer for thirty minutes until the sauce thickens.  
8. Once the sauce has thickened and the ribs are tender, turn off the heat and serve the sweet and sour ribs on a plate.  
9. Garnish with chopped green onions and serve hot with rice for an excellent meal.
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