James Hoffmann 咖啡因含量分析 - 咖啡討論

By Robert
at 2022-12-13T23:35
at 2022-12-13T23:35
Table of Contents
https://youtu.be/etnMr8oUSDo
這集內容蠻有趣的 打破很多刻板印象 資訊量滿滿 很值得花時間看
節錄一些內容如下
Test 1. 手沖 vs 濃縮 咖啡因含量
同樣18g豆子、21%萃取率下 手沖咖啡因平均是濃縮的1.5倍!(170mg vs 110mg)
Test 2. 沖煮萃取分析
a. 手沖
https://i.imgur.com/nzoTiqR.png 萃取率變化從一開始急速上升到趨於平緩
https://i.imgur.com/pdg2Her.png 萃出的咖啡因也從急速上升到趨緩
https://i.imgur.com/mZPVy2p.png 咖啡因含量和萃取率幾乎是線性關係
b. 濃縮(磨豆機Niche zero)
https://i.imgur.com/2C0CG0F.png 萃取率變化跟手沖類似
https://i.imgur.com/zD5fL62.png 不像手沖一開始就萃出大量咖啡因
https://i.imgur.com/pxMCNji.png 咖啡因萃取會延遲 在後段會加速粹出
https://i.imgur.com/A0rCvEN.png P100(大平刀)咖啡因延遲萃取更明顯
Test 3. 咖啡粉水接觸/浸泡時間影響
用愛樂壓實驗 在短時間內咖啡因就趨於飽和(12g粉200g水2分鐘就飽和)
Test 4. 即溶咖啡
即溶咖啡大多用Robusta(咖啡因含量約Arabica兩倍) 但咖啡因比手沖低很多!
https://i.imgur.com/nb4gXzS.png
Test 5. 淺焙 vs 深焙
用同重量豆子手沖 深焙咖啡因比淺焙還高!
https://i.imgur.com/r5LGG1W.png
推測是深焙豆較輕 同重量需要更多豆子 也較多孔(porous)所以容易萃取
不同咖啡豆種咖啡因含量
衣索比亞豆普遍咖啡因較低 高海拔豆咖啡因含量較低(蟲害少咖啡因分泌少)
以上大量簡化內容 實驗設計是有關連性的且內容很有邏輯 有空真的推薦看影片
為了更低的咖啡因 有好理由入手一台頂級大平刀磨豆機了!(X
--
這集內容蠻有趣的 打破很多刻板印象 資訊量滿滿 很值得花時間看
節錄一些內容如下
Test 1. 手沖 vs 濃縮 咖啡因含量
同樣18g豆子、21%萃取率下 手沖咖啡因平均是濃縮的1.5倍!(170mg vs 110mg)
Test 2. 沖煮萃取分析
a. 手沖
https://i.imgur.com/nzoTiqR.png 萃取率變化從一開始急速上升到趨於平緩

https://i.imgur.com/pdg2Her.png 萃出的咖啡因也從急速上升到趨緩

https://i.imgur.com/mZPVy2p.png 咖啡因含量和萃取率幾乎是線性關係

b. 濃縮(磨豆機Niche zero)
https://i.imgur.com/2C0CG0F.png 萃取率變化跟手沖類似

https://i.imgur.com/zD5fL62.png 不像手沖一開始就萃出大量咖啡因

https://i.imgur.com/pxMCNji.png 咖啡因萃取會延遲 在後段會加速粹出

https://i.imgur.com/A0rCvEN.png P100(大平刀)咖啡因延遲萃取更明顯

Test 3. 咖啡粉水接觸/浸泡時間影響
用愛樂壓實驗 在短時間內咖啡因就趨於飽和(12g粉200g水2分鐘就飽和)
Test 4. 即溶咖啡
即溶咖啡大多用Robusta(咖啡因含量約Arabica兩倍) 但咖啡因比手沖低很多!
https://i.imgur.com/nb4gXzS.png

Test 5. 淺焙 vs 深焙
用同重量豆子手沖 深焙咖啡因比淺焙還高!
https://i.imgur.com/r5LGG1W.png

推測是深焙豆較輕 同重量需要更多豆子 也較多孔(porous)所以容易萃取
不同咖啡豆種咖啡因含量
衣索比亞豆普遍咖啡因較低 高海拔豆咖啡因含量較低(蟲害少咖啡因分泌少)
以上大量簡化內容 實驗設計是有關連性的且內容很有邏輯 有空真的推薦看影片
為了更低的咖啡因 有好理由入手一台頂級大平刀磨豆機了!(X
--
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