The steamed buns feel hard because your dough is dry and should be softer when making the dough. And, you don't need to use alkali to make noodles with baking powder. It is better not to use alkali if you can, because alkali can destroy the vitamins and nutrients in the noodles. Even if you need to add alkali, you should never overuse it.
It takes only a few hours to make noodles with baking powder, and it takes a day or so to make noodles in the normal way, so it saves time and effort to make noodles with baking powder. The method is to put about 10 grams of baking powder in one pound of flour, put less to no effect, put more will affect the fermentation quality of the flour. First, mix the two, and then use warm water to mix the noodles, about ten minutes or so, you can wait for the fermentation of music. Need to pay attention to one point, that is, the noodles must be soft and moderate, never and too hard, otherwise the texture is not good.
Expanded Information:
General use of normal dosage, long-term eating baking powder made of pasta is not a problem, because it is up to the national standard, some chemicals are maintained within the prescribed range, this can be assured.
The only thing to worry about is the baking powder containing aluminum salts, because aluminum is very harmful to the human body, especially for long-term consumption, will cause Alzheimer's disease, osteoporosis and other diseases, and even cause cardiovascular disease, the threat to health is still relatively large, this baking powder is best to eat less. If you are your own home DIY pastry, it is recommended to buy baking powder without added aluminum salt, so as not to cause excessive long-term intake of aluminum, damage to health.