Grinding spices: grind size, grinding mechanisms, & tips | JOMA
Grinding Spices – Grind Size, Grinding Mechanism, and What Really Matters
When you grind spices, you're determining their aroma, texture, and quality in that very moment. The difference between a good result and a great one lies not solely in the spice itself, but in the grinder. For spice manufacturers, fillers, and retail chains that fill and market millions of grinders every day, this isn't just a theoretical question – it's a deciding factor in purchasing decisions.
What are the benefits of grinding spices?
Spices only develop their full aroma when they are ground. Grinding releases essential oils that are responsible for flavor, aroma, and intensity. This applies to pepper as well as it does to coriander, turmeric, or herb blends. Whether you grind spices into a fine powder or have them coarsely ground directly influences how strong the aroma is and how long it remains detectable.
For consumers, freshly ground spices are noticeably better than pre-ground powders. For manufacturers and fillers, this means that the grinder is not a secondary consideration – it is an active part of the product experience. Choosing the wrong geometry or using a grinding mechanism that isn't suited to the contents risks poor grinding performance, premature wear, and dissatisfied end customers.
Spice grind: fine, medium, or coarse?
The grind size determines how finely the spice is ground – and thus directly affects how intensely the aroma comes through during cooking. A fine grind releases more essential oils and distributes them more evenly throughout the dish. A coarse grind preserves the spice's texture and releases additional aroma when chewed or heated.
There's no one-size-fits-all answer as to which grind size is best. It depends on the spice, the intended use, and the target audience. For the industry, it's crucial that the selected grind size is reproducible – meaning that every spice grinder from a single batch delivers the same result. This is precisely one of the key requirements that JOMA grinding mechanisms meet.
How to grind spices properly – and what does that have to do with the grinder?
The question of how to grind spices properly is often asked from the consumer’s perspective. But it’s just as relevant for B2B manufacturers. The grinding mechanism, in particular, plays a central role here. This is because it determines how efficiently and consistently spices can actually be ground.
A well-designed grinding mechanism operates without excessive pressure, delivers consistent particle sizes, and maintains consistent performance across multiple refills. Our grinding mechanisms undergo comprehensive quality management and are tested over at least three refills. This is not a marketing promise, but a measurable standard.
Learn more about the design and technical details of the JOMA spice grinder on the corresponding product page.
Comparing the three JOMA grinding mechanisms
Universal plastic grinding geometry
The plastic universal geometry is designed for softer spices and herb blends. Typical products include Italian herbs, herbes de Provence, or steak pepper. The grinding mechanism ensures a fine grind, delivers high output, and maximizes flavor development. The geometry is food-safe and designed for use in industrial filling applications.
For manufacturers who market large-volume herb blends under their own brand or as private label products, this geometry offers the right balance of performance, cost, and reproducibility.
Plastic salt geometry
A dedicated grinding geometry has been developed for hard spices such as Himalayan salt or rock salt. The plastic salt geometry is specifically tailored to the mechanical demands of hard filling materials and delivers high grinding performance even under heavy use. It is designed for up to five refills – a clear advantage for manufacturers who want to promote sustainability and reusable packaging.
The durability of this geometry is the result of careful material selection and precise shaping. It makes no compromise between versatility and performance, but rather offers a dedicated solution for a clearly defined requirement.
JOMA ceramic grinder
The ceramic grinding mechanism stands for maximum durability and peak performance – whether grinding salts, hard spices, or fine herbs. Ceramic is harder than steel, corrosion-resistant, and wear-resistant, making it the most durable option in the JOMA lineup.
The JOMA ceramic grinder can be refilled many times and is designed for premium brands that want to offer their end customers a long-lasting product experience. The ceramic grinding mechanism is also the top choice for the HORECA sector: restaurants and hotels that process large quantities daily benefit from consistent grinding quality over a long period of time. For those operating in this segment, the JOMA ceramic grinder is the clear choice.
Grinding spice blends: special considerations and requirements
Grinding spice blends presents its own unique challenges. Different ingredients have varying degrees of hardness, moisture content, and texture. A blend of paprika, salt, and herbs behaves differently in the grinding mechanism than pure black pepper.
For manufacturers, this means that the grinding geometry must be designed so that all components of a spice blend are ground evenly – without harder components damaging the grinding mechanism or softer components turning into dust. The JOMA universal plastic grinding geometry was developed specifically to meet this requirement.
Our re:cycle range also demonstrates how JOMA approaches raw materials and material selection. Here you'll find, among other things, high-quality plastic spice grinders made from 100% recycled PET – supporting a sustainable circular economy and a noticeable reduction in packaging waste.
Quality you can see – and feel in everyday use
In the B2B sector, spice grinders must do more than just function. They must stand out on the shelf, feel comfortable in the hand, and provide the right sensation when grinding. Design, material quality, and grinding performance are not separate categories – they are interdependent.
JOMA offers various designs: Classic, New Classic, Crown, Cone, and the exclusive Cone Supreme with a ceramic grinding mechanism. All models are available in custom brand colors and can be digitally explored and configured using the JOMA product configurator, DiME
For personalized advice on the right grinding geometry for your product, please contact JOMA.
FAQ: common questions about grinding spices
When it comes to grinding spices, the same questions come up time and again – from the right grinding geometry to the optimal grind size. Here's an overview of the most important answers.
Which spices are best suited for grinding?
In general, most spices can be ground – from pepper and coriander to herb blends and even coarse salt. The key is to adjust the grinding mechanism to the specific contents. Soft herbs require a different geometry than hard Himalayan salt.
What’s the best grind size?
That depends on the intended use. A fine grind releases more flavor and works well for herbs and spice blends. Coarse grinds retain their texture and release additional flavor during cooking or chewing. In an industrial setting, the reproducibility of the grind size is at least as important as the setting itself.
What is the difference between plastic and ceramic grinding mechanisms?
Plastic grinding mechanisms are food-safe, cost-effective, and can be optimized for specific filling materials – JOMA offers two specialized geometries for this purpose. Ceramic grinding mechanisms are harder, more corrosion-resistant, and longer-lasting, making them the preferred choice for premium products and the HORECA sector.
How many times can a spice grinder be refilled?
That depends on the grinding mechanism. JOMA grinding mechanisms are tested as standard for at least three refills. The plastic salt grinding mechanism is designed for up to five refills, while the ceramic grinding mechanism significantly exceeds this figure.
What exactly does “grinding performance” mean?
Grinding performance describes how evenly, efficiently, and consistently a grinding mechanism operates. A high-performance grinding mechanism delivers the same grind consistency over many refills without requiring the user to apply more force or causing premature wear on the mechanism.
Can you grind spice blends?
Yes – however, blends place higher demands on the grinding mechanism because different ingredients have varying degrees of hardness. The JOMA plastic universal geometry was developed specifically for this application.
How do spice grinders for the B2B sector differ from consumer grinders?
B2B grinders must meet significantly higher standards for reproducibility, durability, and refillability. They are used in large quantities, must be machine-refillable, and must deliver consistent results over many refills. JOMA develops its grinding mechanisms exclusively for this professional application.