SCAA金杯理论之黄金水粉比

SCAA美国精品咖啡协会与scae欧洲精品咖啡协会所定义的Gold Cup精杯咖啡比例,必须将咖啡的萃取率抓在20%左右,而TDS(浓度比)大约在1.1%~1.3%间。

针对Drip Filter滴滤冲煮,如何萃取出最佳咖啡风味,控制因素不外乎咖啡粉的萃取物与一杯咖啡中的浓度这两个变量,而这两个变量早在1960年即有所谓”Coffee Gold Cup”金杯咖啡理依据SCAE(欧洲咖啡精品协会)定义Gold Cup Standard:”1000ml水,50~60g咖啡粉,92°C ~96°C 热水冲煮出咖咖啡”。这个咖啡冲煮落在最佳萃取率(Extraction)与浓度(Strength Concentration)的”靶心”位置,即是”Gold Cup”。

首先每颗咖啡可萃取溶出物,最大约为30%(也就是有70%木质部等无法萃取),即10g咖啡粉最多有3g咖啡溶出萃取物,而一杯美味咖啡,咖啡最佳萃取率即30%咖啡最大可溶出物的60~70%为最适萃取,那小于60%(18%以下萃取率)即萃取不足,咖啡风味将呈现风味不完整,而大于70%(22%以上萃取率)则过度萃取,咖啡将呈现冤苦辛辣不好味道。

因此咖啡最佳萃取率为18%~22%。

这18~22%=30%*(60~70%),也就是咖啡最大可萃取率30%,萃取6~7成才是最佳咖啡风味,为什么不直接写18~22%,而绕30%中之60~70%,是当我们在冲煮一杯咖啡时,能想象如何从咖啡最大萃取物中,我们们如何萃取那6,7成的最佳风味。也就是说10g咖啡粉冲泡咖啡最大可萃取30%(3g)咖啡可溶出物,但我们期望最佳的萃取物18%~22%(1.8~2.2g)。

另外这些萃取物将溶于多少热水中,这就是咖啡浓度,最适咖啡浓度落于1.0~1.5%间,小于1.0%轻淡无味,不如喝开水就好,如果太浓厚的咖啡浓度1.5%以上(滴滤咖啡而言),则不好的口感。滴滤咖啡最佳Gold Cup浓度为1.2%~1.45%。太清淡或太浓厚咖啡浓度均是不好的口感。美式风味:就是浓度比较淡的咖啡,所以一杯美式咖啡他的浓度TDS约落在1.2~1.3%。欧洲风味:一般欧洲咖啡浓度比较浓厚一点,所以一杯欧式咖啡他的浓度TDS约落在1.3~1.45%。

所以SCAE(欧洲精品咖啡协会)定义标准Gold Cup靶心位置,与萃取率与浓度关系,即咖啡粉的量有一个相互关系如下:

3

从对照表中决定预定咖啡冲煮量及设定咖啡粉量上下限,如何从0~30%萃取率到达18~22%最佳萃取率,同时咖啡冲泡浓度刚好位于1.2%~1.45%,就如如何投出一颗好球。这冲泡一杯Gold Cup咖啡,上述基本粉量与冲泡量决定后,能否达到最佳18%~22%最佳萃取率,同时浓度又落在1.2%~1.45%,涉及到萃取率问题,与咖啡研磨粗细,水温,过滤介质(影响水停留时间)…等相互变因

2

依SCAE冲煮一杯好咖啡控制因素包含下列五大项;不管用什么方法冲煮咖啡,这五大准则都是必需掌握的。

  • 萃取时间掌握Contact time:应用各种冲煮方法,要在其较佳萃取时间内萃取出18~22%萃取率,重要在控制咖啡研磨度及水温。
  • 水温掌握Temperature of the water:92°C~96°C开始冲煮水温是必需要掌握的,过高或过低初始水温都可能是不适当。
  • 冲煮过程中扰动咖啡粉Turbulence:扰动是为了能冲煮出应有萃取率,如塞风搅拌,手冲水柱冲水强度等都是为达到萃取所必须扰动。
  • 预浸滋润咖啡粉Wettability:手冲,espresso,美式在冲煮前都有的湿润阶段,这阶段湿润水量为每公克咖啡粉,2ml水量预浸,浸润时间约30sec。当然咖啡豆烘焙状态又有不同预浸溼润状态,这部份手冲就可以好好控制了。
  • 均匀冲煮Uniform Dispersion:冲煮过程让水均匀经过每一颗咖啡粉末,同时从初始到结束一致水温,水量萃取是重要的,比如espresso强调冲煮水温压力一致,手冲稳定的水柱就是这个道理。1

    咖啡冲煮方法
    French press法国压
    Percolator摩卡壶
    Drip Filter滴滤(手冲即为滴滤冲煮的其中一种)
    Syphon塞风虹吸
    Pressurised Infusion(Espresso)意式浓缩

    至于咖啡粉的研磨粗细:
    法国压:每颗咖啡研磨成100~300颗咖啡粉末,约直径0.7mm粉末,即约二号特砂糖颗粒大小。
    滤泡滴滤:每颗咖啡研磨成500~800颗咖啡粉末,约直径0.5mm粉末,即约咖啡伴糖颗粒大小。
    塞风:每颗咖啡研磨成1000~3000颗咖啡粉末,约直径0.35mm粉末,即约食品精盐颗粒大小。
    Espresson:每颗咖啡研磨成3500颗咖啡粉末,约直径0.05mm粉末,即约面粉颗粒再粗一点大小。

    SCAA标准杯测时咖啡粉研磨,70~75%通过标准筛#20(0.85mm)的均匀度,约比法国压粗一点。
    另SCAE提供咖啡冲煮过程、不同研磨粗细冲煮时间的观念:
    1.浸润阶段Wetting:这时候将热水放入咖啡粉湿润咖啡,让咖啡萃取物溶解,浸润水量约为咖啡粉量两倍,浸润时间约30sce。
    2.冲煮阶段Water Cycle:这时因上述咖啡粉末粗细各有不同时间让水与咖啡粉接触,并溶出咖啡萃取物。

    • a.法国压:粉末粗,约浸润3~5min
    • b.滴滤泡式:冲煮过程约1~3min
    • c.Syphon:冲煮过程约40~60sec
    • d.espresso:三十秒萃取30cc浓缩咖啡

    3.萃取后段:这时咖啡已萃取50%以上可萃取物,即将60~70%咖啡可溶出物萃取出来为最适萃取及调整水量达到最适咖啡浓度落于1.0~1.5%间。
    4.萃取后咖啡渣:咖啡渣内含水量约为原咖啡粉的2倍量(手冲滤泡式)。

    一些咖啡磅的重量参考
    1.咖啡豆:约6~7颗为1g
    2.Hario Syphon量匙:一平匙8~9g
    3.Hario V60量匙:一平匙14~15g
    4.咖啡豆(烘焙后):0.38~0.43 g/cm^3
    5.咖啡粉:0.44~0.48 g/cm^3
    6.一颗18/64″咖啡豆烘焙后长轴12mm,短轴8mm,高5mm半椭球体,有此一说咖啡萃取与表面积有关,上述一颗咖啡表面积1.4cm^2。

    文 | 网络

    © 版权声明本内容来源于网络,版权归原作者所有。转载请注明!

9,355 thoughts on “SCAA金杯理论之黄金水粉比

  1. Healthier Reply

    I cling on to listening to the news broadcast speak about receiving free online grant applications so I have been looking around for the top site to get one. Could you advise me please, where could i acquire some?

  2. Computer & Technology Reply

    Its like you read my mind! You appear to know a lot about this, like you wrote the book in it or something. I think that you could do with some pics to drive the message home a little bit, but other than that, this is excellent blog. A fantastic read. I will certainly be back.

  3. Computer & Technology Reply

    I am really impressed with your writing skills as well as with the layout on your weblog. Is this a paid theme or did you modify it yourself? Either way keep up the excellent quality writing, it’s rare to see a nice blog like this one today..

  4. Health Magazine Reply

    I was just searching for this info for a while. After 6 hours of continuous Googleing, finally I got it in your site. I wonder what’s the lack of Google strategy that do not rank this kind of informative web sites in top of the list. Usually the top websites are full of garbage.

  5. Computer & Technology Reply

    you are in reality a excellent webmaster. The site loading velocity is incredible. It seems that you’re doing any distinctive trick. In addition, The contents are masterwork. you’ve done a fantastic process in this topic!

  6. Health Food Reply

    You made a few fine points there. I did a search on the subject and found the majority of folks will agree with your blog.

  7. Men'S Health Reply

    Great awesome things here. I am very satisfied to peer your post. Thank you a lot and i am taking a look ahead to contact you. Will you kindly drop me a e-mail?

  8. air jodan 6 Reply

    I intended to compose you the little bit of word to give thanks yet again on the great principles you’ve shared in this article. It’s quite extremely open-handed with people like you to give extensively what exactly most people could have made available for an e-book to end up making some money for their own end, principally considering the fact that you could have done it if you considered necessary. Those tips additionally served to be a fantastic way to recognize that someone else have a similar fervor much like my own to grasp more and more pertaining to this issue. I believe there are numerous more pleasurable situations up front for folks who read through your blog.

  9. Health Store Reply

    I intended to write you a little word to help say thank you over again with the striking thoughts you’ve shared on this website. This is quite shockingly generous with people like you to deliver without restraint all that a lot of people would have advertised for an e book to get some cash for themselves, even more so now that you might have done it if you ever considered necessary. The inspiring ideas also served to become a great way to be certain that some people have the same interest like mine to learn way more related to this issue. I know there are millions of more pleasant periods up front for those who look into your blog post.

  10. Health Products Reply

    I do not even know how I ended up here, but I thought this post was good. I do not know who you are but definitely you’re going to a famous blogger if you aren’t already 😉 Cheers!

  11. Health Store Reply

    I have to express some thanks to the writer for bailing me out of this crisis. Because of researching through the world wide web and finding techniques which were not productive, I assumed my entire life was over. Existing minus the strategies to the issues you have solved by means of your main article content is a serious case, as well as the ones which may have adversely affected my entire career if I hadn’t discovered your site. Your personal capability and kindness in maneuvering a lot of stuff was helpful. I don’t know what I would have done if I had not come across such a solution like this. I am able to at this moment look forward to my future. Thanks for your time so much for this specialized and sensible help. I won’t hesitate to endorse the blog to any person who will need tips on this subject matter.

  12. Whole Food Vitamins Reply

    I’ve been surfing online more than three hours as of late, yet I never discovered any interesting article like yours. It¡¦s lovely value enough for me. In my view, if all site owners and bloggers made good content material as you did, the net will probably be a lot more useful than ever before.

  13. business online Reply

    Magnificent beat ! I wish to apprentice while you amend your site, how could i subscribe for a blog website? The account aided me a acceptable deal. I had been tiny bit acquainted of this your broadcast offered bright clear concept

  14. bathroom remodel Reply

    You actually make it appear so easy with your presentation however I find this topic to be actually something that I think I would never understand. It kind of feels too complex and very broad for me. I am having a look ahead for your subsequent publish, I will try to get the hang of it!

  15. Health Products Reply

    I’m still learning from you, as I’m improving myself. I definitely liked reading everything that is posted on your website.Keep the aarticles coming. I loved it!

  16. Health News Reply

    I simply wanted to post a simple message to be able to express gratitude to you for these unique advice you are giving at this site. My prolonged internet lookup has at the end been paid with professional details to share with my friends. I would believe that we visitors are very lucky to live in a fabulous network with very many brilliant people with valuable solutions. I feel somewhat happy to have come across your entire site and look forward to plenty of more entertaining times reading here. Thanks once more for everything.

  17. Natural Makeup Reply

    I’m still learning from you, but I’m making my way to the top as well. I certainly liked reading everything that is posted on your website.Keep the information coming. I enjoyed it!

  18. Joanne Dozier Reply

    I’ve been browsing online more than three hours as of late, but I never
    discovered any attention-grabbing article like yours.

    It is pretty price enough for me. Personally, if all website owners and
    bloggers made good content material as you probably did, the internet might be a lot
    more useful than ever before.

  19. Joyce Santillo Reply

    I’ve been browsing online more than three hours nowadays,
    yet I by no means found any attention-grabbing article like yours.
    It is pretty price enough for me. Personally, if all web owners and bloggers made just right content as you probably did,
    the internet might be a lot more helpful than ever before.

  20. Keith Foil Reply

    I am sure this post has touched all the internet people, its really really
    pleasant post on building up new weblog.

  21. yeezy boost 350 Reply

    I want to show some appreciation to this writer just for rescuing me from such a trouble. Just after scouting through the world wide web and meeting advice which are not powerful, I assumed my life was done. Living devoid of the answers to the problems you’ve fixed by way of your entire blog post is a serious case, as well as those which might have in a wrong way damaged my entire career if I hadn’t come across your site. That mastery and kindness in handling every aspect was invaluable. I don’t know what I would’ve done if I hadn’t encountered such a point like this. I can also now look ahead to my future. Thank you so much for the professional and results-oriented help. I won’t be reluctant to refer your web sites to any individual who needs direction on this situation.

发表评论

电子邮件地址不会被公开。