Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How much soy bean to use each time?
Document: I got this product on time. I have enjoyed using it since then.The product is excellent. It is very easy to use and clean and it does not have much of waste as other soy milk maker I had before.I will recommend it to my friend.
We brought Joyyoung hot soy milk maker a few month ago. The product arrive very quickly and we put it in use immediately. The soy milk is made is great, much fresh than you can buy from place like WholeFood. We had other Soy milk maker before, it didn't make good soy milk, and we stop use it just a few time. This one produce fresh and rich soy milk, and also very easy to clean. We have use it many time since brought it.
The soy drink made by this machine tastes much better than store bought. The noise created when it is at work is acceptable.I ordered this machine this January and it has been working well since then. One time it did not work was when I did not fill up the water to the upper level line. The water is supposed to be filled up between the two lines.
Great product: very easy to use and wash, take only 15-20 mins to make delicious soy milk, very fine bean dregs (if use red bean and mung bean, even not necessary to filter out dregs...), very quiet while working.Maybe the only weak point is the little plastic smell for the first two or three uses.Excellent service: ordered on a Saturdy, got the machine on the following Monday.
It is the first time I purchase a machine from Amazon and I can save tax and delivery money ,also, the service is good. Thanks very much.
I bought this product weeks ago and use it to make soy milk every morning. It was great. You need only a little cup of dried soybeans and water and 15 min to make soy milk for 4-5 ppl! The taste is much better than the Silk soy milk which sold at Walmart, and without addtives! It is even better if you add 1 tsb. sugar in it, or maybe some cereals as well.
I received this machine three days ago. Dre bean key and mung bean key do not work and those two lights are not on too when I try to use them. I write a question yesterday, but nobody answer it. Bad quality and bad service.
i used to use soy milk maker a lot when i was home, and i got a used one from Warehouse Deals, Inc., at a very reasonable price. i tried it exactly as the manual said and every time it just spilt everywhere making such a mess. after a couple tries i simply gave up and returned it. that one was defective.
Product was delivered on time no issues and in good condition. We love using this machine and the free soy beans it came with are excellent. we will be ordering again from the vendor. The machine is extremely easy to use and clean and makes delicious and fresh soy milk. It is a bit pricey but well worth it because of the ease of use and quality
I am a Chinese, and my family back in China use it everyday. For Asians in general, soy milk is better than milk, which will cause you have a lot of pimples on the face. I am happy very it, yet it will take you 2-3 mins to wash every time after using it. But still, it is a good time investment for the health.
Answer: 1 cup