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# System prepended metadata

title: 咖啡隨筆 - Gaggia New Classic 溫度控制
tags: [Coffee]

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咖啡隨筆 - Gaggia New Classic 溫度控制
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###### tags: `Coffee`

溫度控制
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[Kaffeemacher-Gaggia New Classic - Espressomaschine für unter 400 € im Test - Top-Einstieg!](https://www.youtube.com/watch?v=H2fVzUDNJLM)
- [13:01](https://www.youtube.com/watch?v=H2fVzUDNJLM#t=13m01s) 如何維持溫度
    > * 剛啟動、靜置很久(zu heiß)
    10 Sekunden spülen
    45 Sekunden warten
    > * 連續沖煮
    2 Sekunden spülen
    45 Sekunden warten

奶泡控制
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[TMB - The Majestic Bean Channel / Home Barista](https://www.youtube.com/watch?v=sSjkO-IQNT4&t=21s)
Brewing workflow 
1. Turn on machine.  Let it heat up 15-30m.  
2. Wait for BREW BUTTON to light up 
3. Remove Portafilter 
4. Run some water through group head then wipe with towel and use brush to clean
5. 18g coffee into basket and tamp
6. Flip on STEAM BUTTON for 20s then flip off
7. Put filled Portafilter into place 
8. Brew espresso 
***Longer than 20s will cause boiling water/steam to spill into group head 

Steaming Milk workflow
1. Flip on STEAM BUTTON until it lights up
2. Flip off STEAM BUTTON 
3. Turn steam valve and release all of the steam until it runs out
4. Press STEAM BUTTON AND BREW BUTTON 
5. Turn steam valve to let some hot water out of steam wand
6. Flip off BREW BUTTON
7. Wait for steam to come out of steam wand, then close steam valve
8. Wait 20s.  
9. Open steam valve to purge a little bit, then steam milk normally.  
***STEAM BUTTON will not light up, but you will have enough steam for milk

General workflow for brewing and frothing
1. Turn on machine
2. Purge/clean group head 
3. Brew button light on 
4. Flip on Steam button for 20s, flip off
5. Brew
6. Wait 20-30s for boiler to heat up again
7. Press Steam Button + Brew Button
8. Release hot water out of steam wand
9. Flip off Brew button
10. Wait for steam to come out of steam wand, then close valve 
11. Wait 20s
12. Purge steam valve a little bit, then steam milk normally.  Boiler will be hot enough to provide enough steam for (2 latte worth of) milk

粉量
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[Gaggia New Classic – a classic espresso machine at home](https://www.coffeedesk.com/blog/gaggia-new-classic-a-classic-espresso-machine-at-home/)
>Dosing – when brewing espresso, initially it is good to use a <font color="red">1:2</font> ratio, i.e. about <font color="red">16-18g</font> of ground coffee and <font color="red">32-36g</font> of the resulting espresso. To obtain such proportions, you will need a scale, preferably weighing to 0.1 accuracy.