Questions tagged [tamping]

A step in the espresso brewing process where pressure is forced upon ground coffee to form a tightly compacted puck in the portafilter basket.

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Why is tamping necessary for espresso machines but not mokas?

Why is tamping necessary for espresso machines but not mokas? Kingston's How to Make Coffee: The Science Behind the Bean, on how to use a moka, says: Fill the funnel with enough finely ground coffee ...
3
votes
1answer
141 views

How much leverage pressure is it needed to compress coffee for an espresso?

Some espresso machines come with a lever to compact the ground coffee before the espresso starts the brewing, other machines do the compacting part by themselves. How much leverage or pressure is it ...
3
votes
1answer
275 views

How to avoid channels when pouring espresso

I've been having issues with my espresso pouring too fast, and I think I'm getting channels (uneven pour, sometimes one side gets blonde then watery pretty quickly). I'm paying a lot of attention to ...
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3answers
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How important is tamping coffee for an espresso machine

I observe that coffee servers (I refuse to use the term barista) will apply pressure to the coffee grounds using a variety of methods and pressure. This seems to vary wildly and I'd like to know how ...
14
votes
2answers
2k views

What is the impact of espresso tamper base shape?

As I shop for a new espresso tamper, I see that there are a dizzying array of options for the shape of the base (i.e., the shape of the part that contacts the grounds). Some shapes include convex ("...
1
vote
1answer
138 views

Can my tamping method damage the basket or portafilter?

I have developed the following tamping method: press the grinds with the tamper without much force, to smoothen it leave the tamper in the basket holding the tamper and the portafilter together, ...
5
votes
2answers
106 views

When should I tamp the coffee?

I have a Sage Dual Boiler coffee machine, using the stock portafilter and baskets. Should I tamp the coffee in the basket and then insert into the portafilter, or insert the basket first into ...
5
votes
1answer
345 views

Ideal Way to control shot extraction with Gaggia Classic

Wanted to know if anyone has a really good, possibly verified method of controlling shot preparation and extraction with an unmodified Gaggia Classic espresso machine. I don't have, nor do I want to ...
8
votes
1answer
341 views

What is essential for a proper tamp?

There are competing theories as to what you should do when tamping grounds in a portafilter. Some of these include: 30 lbs. of pressure, 90* angle Knocking the side of the portafilter with the tamper ...
8
votes
2answers
2k views

How do I know how hard to tamp my coffee?

For someone without an expensive machine that can regulate the pressure when tamping, how can I know how hard to tamp, and if I'm tamping too hard? I make espresso with a counter-top machine, and I ...