Many people who have used lever machines describe a “softness” to the extraction, compared to pump powered brewing. This is a physical property of springs, and graphs in the case of espresso machine applications as a straight line of pressure reduction over spring length. The quality of extraction with a lever is different from a conventional espresso machine, because of the way springs relieve the force applied to them. (With lever machines the volume of water for brewing is fixed, predetermined by the size and volume of this chamber.) As the spring returns to static position, moving against the resistance of the tamped coffee in the portafilter, it gradually forces water through the coffee. This action allows water to fill a chamber. To make coffee on a BOSCO or virtually any other lever machine, you pull down a handle which compresses a large spring located inside that tall cylindrical area above the group. The BOSCO lever has no pump and motor–so brewing is quiet.īut first some background on lever machines. The use of a spring instead of a pump to provide brew pressure is the main difference between lever machines and conventional, traditional-style espresso machines. I have attached a picture of the BOSCO espresso machine now in place at the Caffe Vita in Fremont. Must be a well known company.LnRiLWhlYWRpbmcuaGFzLWJhY2tncm91bmR7cGFkZGluZzowfQ= Caffe Vita – Leveraging the BOSCO support May 05, 2008 Please include cost, shipping and the website in the title. Got some fun facts or details coffees history? or - Posts about a specific coffee varietal, coffee roaster or origin. For questions about anything coffee related. Mods, purchasing, new products, storage containers, etc. The following tags should cover just about everything but feel free to make your own if one of the following doesn't work. " How to install the PID mod on a Rancilio Silvia" - We know they can be kind of ugly but the are helpful we swear. Please include tags based on your posts content prior to the Title, e.g. Here is a giant Coffee MapĬreated & curated by /r/coffee community - & it's maintenance thread. We run weekly special threads, listed below. Links, Questions and Wikiįor more guides, gear, reading, news and links visit our Wiki Page! Or maybe you heard a great coffee joke, bought an awesome new coffee mug or found a mysterious can of crazy looking foreign coffee in your grandfather's basement.įor non-informative or non-depthy-discussion "coffee culture" posts, please check out /r/cafe. Just in case you're more into pictures of etched or free-pour latte art or that oh-so-beautiful, monstrous Slayer espresso machine pouring a luscious shot through a bottomless portafilter. If /r/coffee is dry and stodgy and pretentious, /r/cafe is our break from that. We also offer /r/cafe as our more casual & fun sister community. In short, be nice, respect this community and its members, don't try to sell or promote stuff, and be aware comments and submissions are both curated content within this space. These lay out our our expectations for participants, but also the values and rationales behind them. Its a place to learn, share, and make new friends. It's a place to ask questions about how to make your daily cup just a little bit better. This is a place to talk about the farms, the beans, the baristas, the roasters, the industry, the brewing gear & techniques. To us, the world of coffee is more complex than just a tasty caffeinated beverage to get you going. We're equal parts a passionate horde of amiable amateurs and the back room lounge of the coffee industry.
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