{"id":67914,"date":"2026-05-22T15:13:48","date_gmt":"2026-05-22T07:13:48","guid":{"rendered":"https:\/\/1zpresso.coffee\/?p=67914"},"modified":"2026-06-04T13:15:05","modified_gmt":"2026-06-04T05:15:05","slug":"kultra-review-p-coffee-roaster","status":"publish","type":"post","link":"https:\/\/1zpresso.coffee\/jp\/kultra-review-p-coffee-roaster\/","title":{"rendered":"1Zpresso K-Ultra Coffee Grinder Review | P. Coffee Roaster\u2019s Pour-over Brewing Tips"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"67914\" class=\"elementor elementor-67914\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f1b9ff2 e-flex e-con-boxed e-con e-parent\" data-id=\"f1b9ff2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ad738d0 elementor-widget elementor-widget-video\" data-id=\"ad738d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=b_yIKK0l2wM&amp;t=2s&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-270d6d59 e-flex e-con-boxed e-con e-parent\" data-id=\"270d6d59\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4b35a978 elementor-widget elementor-widget-text-editor\" data-id=\"4b35a978\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><b>Boyan \u2014 Owner of P. Coffee Roaster<\/b><\/h2><p><span style=\"font-weight: 400\">Boyan, the owner of P. Coffee Roaster, also serves as the shop\u2019s roaster and barista. He did not originally start his career in coffee. A few years ago, he decided to pursue what he truly loved.<\/span><\/p><p><span style=\"font-weight: 400\">He began by setting up booths at local creative markets, roasting coffee himself and interacting directly with customers. Through that process, more people became familiar with his work, while he gradually developed a deeper understanding of both the market and coffee flavor profiles.<\/span><\/p><p><span style=\"font-weight: 400\">During a 1Zpresso brewing session at the Taiwan International Coffee Show, Boyan shared some of his observations and approaches to coffee brewing.<\/span><\/p><h2><b>How Boyan Approaches Flavor Balance in Brewing<\/b><\/h2><p><span style=\"font-weight: 400\">At his caf\u00e9, Boyan usually aims for coffees with bright acidity and aromatics, a rounded body, and lingering sweetness.<\/span><\/p><p><span style=\"font-weight: 400\">To achieve that balance, he adjusts several brewing variables depending on the coffee and the flavor profile he wants to bring out, including:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">\u30b0\u30e9\u30a4\u30f3\u30c0\u30fc<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Dripper<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Pouring technique<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Water temperature<\/span><\/li><\/ul><h2><b>At-Home Brewing: The Grinder Matters<\/b><\/h2><p><span style=\"font-weight: 400\">Boyan shared that when selling coffee beans at the shop, he often hears customers ask the same question:<\/span><\/p><p><span style=\"font-weight: 400\">\u201c<\/span><b>Why can\u2019t I brew coffee at home that tastes the same as it does in the caf\u00e9?<\/b><span style=\"font-weight: 400\">\u201d<\/span><\/p><p><span style=\"font-weight: 400\">He explained that many factors can cause this difference, but two of the most important are <\/span><b>water and the grinder<\/b><span style=\"font-weight: 400\">.<\/span><\/p><p><span style=\"font-weight: 400\">For coffee drinkers who do not brew large quantities every day, he actually recommends using a manual coffee grinder.<\/span><\/p><h2><b>The K-Ultra: 1Zpresso\u2019s Flagship All-Round Grinder<\/b><\/h2><p><span style=\"font-weight: 400\">For this demonstration, Boyan used the 1Zpresso K-Ultra manual coffee grinder.<\/span><\/p><p><span style=\"font-weight: 400\">He described the K-Ultra as the all-purpose flagship model in the 1Zpresso lineup, suitable for multiple brewing methods including espresso and pour over. He also mentioned that it feels \u201c<\/span><b>very easy to grind<\/b><span style=\"font-weight: 400\">.\u201d<\/span><\/p><p><span style=\"font-weight: 400\">During hands-on use, one feature stood out to him immediately:<\/span><\/p><p><span style=\"font-weight: 400\">\u201c<\/span><b>It\u2019s pretty cool. With just one turn of the adjustment ring, you can get to the grind setting you want.<\/b><span style=\"font-weight: 400\">\u201d<\/span><\/p><h2><b>P. Coffee Roaster\u2019s Pour Over Recipe<\/b><\/h2><h3><b>Brewing Parameters<\/b><\/h3><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Coffee dose: 18g<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Total water: 300ml<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Water temperature: 92\u00b0C<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Grind setting: <a href=\"https:\/\/1zpresso.coffee\/jp\/k-ultra\/\">K-Ultra<\/a> 8.5<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">** When brewing a Panama Geisha, Boyan adjusted the grind setting to 8. The slightly finer grind helped increase extraction, bringing out more floral aromatics, citrus notes, and caramel-like sweetness.<\/span><\/p><h3><b>Pouring Structure<\/b><\/h3><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Bloom: about 40ml for 30 seconds<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Second pour: pour to 160\u2013180ml using small circular pours<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Third pour: pour to 230\u2013240ml using center pours<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Final pour: finish at 300ml using center pours<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Boyan explained that using center pours in the later stages helps avoid pulling too much heaviness into the cup, keeping the flavor cleaner and lighter.<\/span><\/p><p><span style=\"font-weight: 400\">** When brewing a Panama Geisha, however, he continued using circular pours in the later stages to increase extraction.<\/span><\/p><h2><b>Pour Over Brewing Tips<\/b><\/h2><h3><b>1. Finer Grinding Can Increase Extraction<\/b><\/h3><p><span style=\"font-weight: 400\">During the Panama Geisha demonstration, Boyan adjusted the K-Ultra to grind setting 8.<\/span><\/p><p><span style=\"font-weight: 400\">Compared to the previous setting of 8.5, the slightly finer grind helped release more flavor compounds, making the floral notes, citrus tones, and caramel sweetness easier to express.<\/span><\/p><h3><b>2. With a V-Shaped Dripper, Keep Circular Pours Tight<\/b><\/h3><p><span style=\"font-weight: 400\">During this brew, Boyan intentionally kept his circular pouring motion within an area roughly the size of a coin.<\/span><\/p><p><span style=\"font-weight: 400\">He explained that because the coffee bed in a V-shaped dripper is deeper in the center, keeping the pouring range smaller allows the water to stay concentrated in the middle, improving extraction in the main coffee bed.<\/span><\/p><h3><b>3. If the Flavor Is Off, Adjust Grind Size First<\/b><\/h3><p><span style=\"font-weight: 400\">If the coffee tastes bitter or overly heavy, the grind may be too fine.<\/span><\/p><p><span style=\"font-weight: 400\">When aiming for a cleaner and lighter flavor profile, and assuming the coffee-to-water ratio is already appropriate, he recommends adjusting the grind coarser first.<\/span><\/p><p><span style=\"font-weight: 400\">Compared with other brewing variables, he suggests starting with grind size adjustments before changing anything else.<\/span><\/p><h2><b>Boyan\u2019s Overall Thoughts on the K-Ultra Grinder<\/b><\/h2><p><span style=\"font-weight: 400\">This demonstration showed how directly the grinder can influence brewing results and flavor expression.<\/span><\/p><p><span style=\"font-weight: 400\">Boyan noted that when people struggle to recreate caf\u00e9-quality flavor at home, two common reasons are water and the grinder.<\/span><\/p><p><span style=\"font-weight: 400\">For people who brew smaller amounts on a daily basis, he believes a manual grinder is more than sufficient and also convenient to carry around.<\/span><\/p><p><span style=\"font-weight: 400\">He also shared a practical rule of thumb for dialing in flavor: grind size directly affects extraction speed and flavor expression. If a coffee tastes bitter, heavy, or lacks clarity, one of the first adjustments should be grinding slightly coarser.<\/span><\/p><p><span style=\"font-weight: 400\">According to Boyan, the K-Ultra\u2019s adjustment system feels intuitive, allowing users to quickly switch between brewing styles within a single rotation of the adjustment ring, while still maintaining a smooth and effortless grinding experience.<\/span><\/p><p><span style=\"font-weight: 400\">\u00a0<\/span><\/p><p><a href=\"https:\/\/1zpresso.coffee\/jp\/k-ultra\/\"><img fetchpriority=\"high\" decoding=\"async\" data-attachment-id=\"57752\" data-permalink=\"https:\/\/1zpresso.coffee\/jp\/costa-rican-coffee\/k-ultra-silver\/\" data-orig-file=\"https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?fit=1305%2C650&amp;ssl=1\" data-orig-size=\"1305,650\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"K-Ultra silver\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?fit=1024%2C510&amp;ssl=1\" data-recalc-dims=\"1\" class=\"alignnone size-large wp-image-57752\" src=\"https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=1024%2C510&#038;ssl=1\" alt=\"Coffee beans being poured into a 1Zpresso K-Ultra hand grinder\" width=\"1024\" height=\"510\" srcset=\"https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?w=1305&amp;ssl=1 1305w, https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=300%2C149&amp;ssl=1 300w, https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=1024%2C510&amp;ssl=1 1024w, https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=768%2C383&amp;ssl=1 768w, https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=18%2C9&amp;ssl=1 18w, https:\/\/i0.wp.com\/1zpresso.coffee\/wp-content\/uploads\/2025\/04\/K-Ultra-silver.png?resize=600%2C299&amp;ssl=1 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p><a href=\"https:\/\/www.youtube.com\/watch?v=b_yIKK0l2wM&#038;t=2s\" rel=\"nofollow\">https:\/\/www.youtube.com\/watch?v=b_yIKK0l2wM&#038;t=2s<\/a> Boyan \u2014 Owner of P. Coffee Roaster Boyan, the owner of P. Coffee Roaster, also serves as the shop\u2019s [&hellip;]<\/p>\n","protected":false},"author":191648712,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","ghostkit_customizer_options":"","ghostkit_custom_css":"","ghostkit_custom_js_head":"","ghostkit_custom_js_foot":"","ghostkit_typography":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1646],"tags":[],"class_list":["post-67914","post","type-post","status-publish","format-standard","hentry","category-uncategorized-en"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Boyan \u2014 Owner of P. 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