Overview
The 1Zpresso K-Ultra is the pinnacle of the K-series, featuring refined burrs and the smoothest grinding action in the lineup. The Ultra designation reflects incremental improvements throughout — tighter tolerances, improved alignment, and a more refined adjustment mechanism. The result is marginally better grind quality and a more satisfying grinding experience compared to the K-Max. The integrated catch cup and foldable handle maintain the travel-friendly design the K-series is known for. For the 1Zpresso enthusiast who wants the very best the K-platform offers, the K-Ultra delivers premium quality in every detail.
The 1Zpresso K-Ultra features a 48mm conical burr set, crafted from steel. Grind retention is approximately 0.1g — virtually zero retention, making it excellent for single dosing.
At $239, the 1Zpresso K-Ultra is aimed at home baristas seeking a solid grinder without a premium price tag. Key workflow features include single-dose design (no hopper needed). As a hand grinder, it's completely silent, portable, and gives you a meditative morning ritual.
The 1Zpresso K-Ultra is weighing 0.7 kg, manufactured in Taiwan. Its footprint measures 55 x 55 x 195 mm (W×D×H).
Pros & Cons
Pros
- Capable 48mm burr set provides good grind quality for espresso
- Designed for single dosing — weigh your beans in, get precisely that amount out with minimal waste
- Near-zero retention (0.1g) means almost no stale grounds contaminating your next shot
- Completely silent operation — perfect for early mornings without waking the household
- Fully portable with no electricity required — great for travel and camping
Cons
- Manual grinding requires physical effort — espresso-fine takes 30-60 seconds of turning
- Not practical for making multiple drinks back-to-back for guests
- Stepped grind adjustment may not allow fine enough tuning between settings for espresso
Full Specifications
| Brand | 1Zpresso |
|---|---|
| Model | 1Zpresso K-Ultra |
| Category | Hand Grinder |
| Country of Origin | Taiwan |
| Year Introduced | 2023 |
| Burr Size | 48 mm |
| Burr Material | Steel |
| Burr Type | 48mm conical |
| Retention | 0.1 g |
| Single Dose | Yes |
| Stepless Adjustment | No |
| Hopper Capacity | 35 g |
| Dimensions (W x D x H) | 55 x 55 x 195 mm |
| Weight | 0.7 kg (1.5 lbs) |
| MSRP | $239 |
Our Verdict
The 1Zpresso K-Ultra is a hand grinder, which means it trades speed and convenience for portability, silence, and often better value per dollar of grind quality. In the $100–$250 range, hand grinders can match or exceed electric grinders costing twice as much in grind quality. This is the sweet spot for serious home baristas who don't mind the manual effort. If your daily routine involves 1-2 drinks and you enjoy a mindful morning ritual, this is an excellent option. For larger households or back-to-back drinks, consider an electric alternative.
Frequently Asked Questions
Can the 1Zpresso K-Ultra grind fine enough for espresso?
Yes, the 1Zpresso K-Ultra is capable of grinding fine enough for espresso. You may need to experiment with the stepped settings to find the sweet spot for your beans.
Is the 1Zpresso K-Ultra good for single dosing?
Yes, the 1Zpresso K-Ultra is designed for single dosing. With only 0.1g of retention, virtually all the coffee you put in comes out ground. Weigh your beans before grinding for the most consistent results.
How long does it take to grind espresso with the 1Zpresso K-Ultra?
Grinding a single dose (18g) for espresso typically takes 30-60 seconds with the 1Zpresso K-Ultra, depending on the bean and your desired fineness. It requires moderate physical effort. Most users find it a pleasant morning ritual, but if you make more than 2-3 drinks daily, consider an electric grinder.
How do I maintain the 1Zpresso K-Ultra?
Clean out retained grounds after each use with a brush or bellows. Deep clean the burrs every 2-4 weeks by removing them and brushing away oil buildup. Hand grinders are easy to disassemble for cleaning. Never wash burrs with water.