{"product_id":"step-down-portafilter-basket","title":"Introvert Step-Down Portafilter Basket","description":"\u003cp data-start=\"0\" data-end=\"308\"\u003eThe Introvert Step-Down Portafilter Basket is a 58mm basket with a reduced 49mm extraction zone, designed to deepen puck height and improve resistance for more stable, balanced espresso. This step-down geometry concentrates extraction, helping reduce inconsistencies while enhancing body and flavour clarity.\u003c\/p\u003e\n\u003cp data-start=\"310\" data-end=\"590\"\u003eCNC-machined from solid 304 stainless steel, the basket features straight walls, sharp edges and a reinforced base to support consistent flow and minimise flex during brewing. Its precision construction delivers durability, corrosion resistance and reliable long-term performance.\u003c\/p\u003e\n\u003cp data-start=\"592\" data-end=\"924\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBy narrowing the internal diameter while retaining 58mm compatibility, the basket creates a taller puck and more controlled pressure gradient through the coffee bed. The result is reduced channelling, improved extraction stability and a practical tool for baristas exploring advanced dial-in and high-extraction espresso techniques.\u003c\/p\u003e\n\u003ch2 data-end=\"896\" data-start=\"539\"\u003eIntrovert Step-Down Portafilter Basket\u003c\/h2\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"1744\" data-end=\"1770\"\u003eCNC-Machined Precision\u003c\/strong\u003e – Cut from a solid block of 304 stainless steel for exact geometry, sharper edges and superior durability.\u003cbr data-start=\"1878\" data-end=\"1881\"\u003e\u003cstrong data-start=\"1881\" data-end=\"1910\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"1881\" data-end=\"1910\"\u003eStep-Down Extraction Zone\u003c\/strong\u003e – Converts a 58mm basket into a 49mm chamber, creating a taller puck that promotes balanced resistance and richer flavour.\u003cbr data-start=\"2035\" data-end=\"2038\"\u003e\u003cstrong data-start=\"2038\" data-end=\"2065\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"2038\" data-end=\"2065\"\u003eImproved Flow Stability\u003c\/strong\u003e – The compact bed structure supports even water distribution, minimising channelling and enhancing clarity.\u003cbr data-start=\"2173\" data-end=\"2176\"\u003e\u003cstrong data-start=\"2176\" data-end=\"2202\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"2176\" data-end=\"2202\"\u003eOptimised Hole Pattern\u003c\/strong\u003e – 1001 laser-cut holes with a 3.6% open area deliver uniform flow and clean extractions.\u003cbr data-start=\"2292\" data-end=\"2295\"\u003e\u003cstrong data-start=\"2295\" data-end=\"2316\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"2295\" data-end=\"2316\"\u003eSeamless Geometry\u003c\/strong\u003e – Smooth funnel transition ensures no ledges or turbulence for consistent extraction across the puck.\u003cbr data-start=\"2418\" data-end=\"2421\"\u003e\u003cstrong data-start=\"2421\" data-end=\"2442\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"539\"\u003e\u003cstrong data-start=\"2421\" data-end=\"2442\"\u003eCompatible Design\u003c\/strong\u003e – Works with standard 58mm tampers, dosing tools and bottomless portafilters.\u003c\/p\u003e\n\u003ch3 data-end=\"896\" data-start=\"539\"\u003eThis Product Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x Introvert Step-Down Espresso Basket (Alpha V0.1 Edition)\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x 49mm Steel Mesh Puck Screen\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x 49mm Steel Spring\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x 3D-Printed Dosing Ring\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x 3D-Printed 49mm Simple Tamper\u003c\/li\u003e\n\u003cli data-end=\"896\" data-start=\"539\"\u003e1 x 3D-Printed Portafilter Stand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 413.094px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\u003cstrong\u003eHole Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003e1001 precision laser-cut holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\n\u003cstrong\u003eOpen Ar\u003c\/strong\u003e\u003cstrong\u003eea Ratio\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003e~3.6% (medium flow)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\u003cstrong\u003eIdeal Dose Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003e16 - 18g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\u003cstrong\u003eCare\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003eHand wash only; avoid detergents or dishwasher use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 19.5938px;\"\u003e\u003cstrong\u003ePortafilter Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 19.5938px;\"\u003e58mm Bottomless (will not fit spouted portafilters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 169.156px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 169.156px;\"\u003e\u003cstrong\u003eMachine Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 169.156px;\"\u003e\n\u003cp\u003eStandard 58mm E61 groups as well as \u003ca href=\"https:\/\/alternativebrewing.com.au\/products\/flair-58-espresso-maker\/\"\u003eFlair 58\u003c\/a\u003e, \u003ca href=\"https:\/\/alternativebrewing.com.au\/products\/victoria-arduino-eagle-one-prima-coffee-machine\/\"\u003eVictoria Arduino Eagle One Prima\u003c\/a\u003e \/ White Eagle, IKAPE K2 Pro Portable Coffee Maker, Modbar, Gaggia Classic (depending on dispersion block)\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease note: This basket is \u003cstrong\u003enot\u003c\/strong\u003e compatible with Lelit Elizabeth's stock dispersion block, Pesado 58.5 shower screens or stock IMS screens (58.5mm diameter)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 90.7812px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 90.7812px;\"\u003e\u003cstrong\u003eTamper Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 90.7812px;\"\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/alternativebrewing.com.au\/products\/normcore-mini-tamper?variant=45498742243527\"\u003eNormcore 49mm Tamper\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease note: This basket is \u003cstrong\u003enot \u003c\/strong\u003ecompatible with Puq Press 58mm tampers\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.5938px;\"\u003e\n\u003ctd style=\"width: 35.5499%; height: 35.5938px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.0891%; height: 35.5938px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eExternal Lip Ø - 70mm\u003c\/li\u003e\n\u003cli\u003eExternal Top Wall Ø - 60mm\u003c\/li\u003e\n\u003cli\u003eInternal Top wall Ø - 58.4mm\u003c\/li\u003e\n\u003cli\u003eInternal Bottom Wall Ø - 49.85mm\u003c\/li\u003e\n\u003cli\u003eHeight - 37.7mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Introvert Makes","offers":[{"title":"Default Title","offer_id":43136448462982,"sku":"Basket-58-49","price":119.9,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2085\/2179\/files\/Introvert-Step-Down-Basket-58-49mm-Alpha-Version-_NO-PUCK-SCREEN.jpg?v=1771824252","url":"https:\/\/baristawarehouse.com.au\/products\/step-down-portafilter-basket","provider":"Barista Warehouse","version":"1.0","type":"link"}