Designed exclusively for use with the Breville Dual Boiler BES900, BES920 & Oracle BES980 espresso machines, the Breville Bottomless Portafilter fits snugly against the 58mm brew head. Perfect your shot by watching it extract drop by precious drop. Made of stainless steel with a 5 inch long black handle and a stainless steel end cap, the overall length is 8.5 inches.
The Breville Bottomless Portafilter is designed specifically for the Dual Boiler BES900 & BES920 models, as well as the Oracle BES980 model. It is not interchangeable with other Breville models or other brands that have 58mm brew heads and does not come with a filter basket. It uses the included selection of filter baskets that come with your Breville Dual Boiler BES900, BES920 or Oracle BES980 purchase.
1. It helps you practice your dosing and tamping technique. You'll be able to directly see if grounds are accumulating in one particular spot, or if your tamp was uneven. This has definitely helped me diagnose failed shots in the past. Looking underneath as the shot is being pulled helps you see directly "what's going on."
2. It's easy to remove and change baskets. I find it much easier to pop out and replace baskets without a bottom. You can simply push the basket, and it'll pop right out, rather than having to pry it out.
3. It's gorgeous to see the "honey-drip" as the shot begins to drop, and to see it extract and change over the 25-35 seconds. Purely aesthetic here :)
Overall, it seems many professional baristas and shops are using these bottomless portafilters, but as far as I can tell, there is no technical or discernible difference. It's just preference and maybe a bit of fashion. Hope this helps!
I love my bottomless portafilter, it's really the only one I ever used. It allows you to fine tune you technique by letting you see if you pour is even, I was having issues with channeling when I first got my machine, and was able to see wear it was coming from and it gave me a guide on how to correct it. I have had my dual boiler for a year and never have used the pressurized baskets, and I had the added challenge that this was my first machine. If you plan on using the pressurized baskets you really don't need a bottomless portafilter, but the extra cup clearance is nice if you plan. On pouring into a mug,
The one that comes with the machine will produce just as good espresso as this portafilter provided your tamping technique is good. What this portafilter does is expose poor technique. The standard model doesn't let you see how even the shot is as it exits the puck. If your tamp was proper you'll see a nice even single stream pouring from the middle of the screen. If your tamp was uneven or insufficient you'll get little jet sprays where the water made a channel through the coffee. It is just another tool to use to improve your technique. It has no effect on its own in resulting shot.
Several reasons: The main one is to analyze your shot better - you can see if the flow is even and improve your shots. There are some great guides out there that help you analyze the shot. Most pros recommend a bottomless portafilter. Also, I find that when making espresso for myself, the bottomless filter is easier to clean and doesn't drip after the shot is done - no bottom means no retention of liquid. It's also easier to tamp the coffee. I love my bottomless portafilter!
A bottomless portafilter allows you to observe the distribution and quality of the pour. Some people use them intermittently as a tool to gauge their basket prep and distribution of grounds. They can be a bit messy as a poor distribution (among other factors) will cause channeling and spritzers. I no longer have a Breville machine (moved on to an M58), but I use a bottomless portafilter exclusively.
The one that comes with the machine is perfectly ok. However, the naked porta-filter allows you to see exactly how the coffee is coming out during the brewing process. Whether you are tamping correctly or if the grind is too coarse, etc. And it just looks awesome when that beautiful drip begins...
Bottomless portafilters allow you to watch the pour as it comes out of the portafilter. This would provide feedback on your tamping, grind, and distribution technique as well as help troubleshoot problems. Its not essential, but as an amateur barista highly recommended.
Two good reasons: 1- A naked PF allows close examination of your extraction--channeling, uneven extraction and pints you towards better technique for making that perfect cup. 2-A naked PF will support use of really deep basket, in case you want triple doses!
It allows you to watch the extraction coming directly from the screen. This can help diagnose your grind settings as well as the quality of your puck. Channels and spritzers are easy to spot this way. If you're a serious espresso nerd, you'll want one. ;)
A naked portafilter allows you to see the coffee immediately after extraction, and can help identify issues, such as an uneven tamp, or channeling. The best part, IMO, is that you can see everything - it's geeky espresso voyeurism.
What is the Breville Bottomless Portafilter for Dual Boiler & Oracle? It comes as a free extra with the Breville Oracle Espresso Machine BES980XL. What is it and what does it do, or what is it for?
A shopper on Feb 7, 2016
Breville Bottomless Portafilter for Dual Boiler & Oracle
Breville Oracle Espresso Machine BES980XL
Best Answer:The bottomless portafilter can be used for a few reasons. 1.) To pull a good tasting espreso shot, one variable is that you always need to make sure to start with the portafilter and filter basket clean and dry. If you are pulling multiple shots in a row, it is faster and easier to rinse and dry the filter basket only with the bottomless, without having to remove it from the portaflter to rinse and dry both as you would have to do with a spouted portafilter. 2.) A percentage of crema is unfortunately lost when espresso makes contact with any surface that is not the serving cup, mug or glass. That means if you pull a shot into a shot glass and then dump that into your serving cup, a percentage of crema clings to the surface of the shot glass and is lost. The same holds for the spouted portafilter, some crema will cling to the portafilter as the espresso passes through the filter basket into the bottom of the portafilter and through the spouts. This does not occur with the bottomless portafilter because the espresso makes no contact with any surface as it flows through the filter basket, maximizing all the crema. 3.) To check if your grind size and tamp pressure is accurate, the bottomless portafilter is a good tool to use. You can clearly see as the shot begins to pour, whether your grind size and tamp pressure is is good based on how it is pouring from the bottom of the basket. It should slowly bubble out evenly from the entire basket bottom and work to the middle as a solid mouse tail stream. Any other way will show you if you have an issue with this. 4.) It just looks really cool when you get it right :)
The bottomless portafilter holds a one or two cup filter s, like any other portafilter, but does not have two spouts like most others to channel espresso to a cup. This makes it possible to see the espresso delivered, which may help diagnose issues with your grind, tamp, etc. If it's right, you see a lovely single stream; wrong and you get coffee spraying around. So, more information at the cost of a little more chance of a mess.
The portafilter is the part where you put your coffee grounds into. You machine comes with one that has a bottom which can divide the shot. The bottomless on gives you a bit more insight into the shot you are pulling. Most people use it to help perfect their shot and to learn to make better shots. Personally I use the bottomless all that time since it's easier to clean.
I had to look this up myself! A bottomless portafilter is used if you're experimenting with hand grinding and tamping your espresso-- it lets you see if it's coming out evenly as it should, without channeling. With the Oracle, which pre-tamps, it isn't really necessary. Just a fun accessory.