Our Process

Meticulous Bean Selection

We begin with the finest quality Arabica beans, meticulously selected for their rich flavour and exceptional aroma. This careful selection process guarantees that only the best beans are chosen, providing a solid foundation for creating a superior coffee experience.

Specialty Roasting & Brewing

Our beans are roasted to perfection, capturing the unique characteristics of each batch. The coffee is then brewed to extract the full range of flavours, achieving an optimal extraction percentage. This process involves carefully controlling the variables to ensure that the total dissolved solids (TDS) are within the ideal range of 1.25% to 1.55%. This ensures a balanced, flavourful cup with the right strength and complexity.

Preservation of Freshness

The brewed coffee is rapidly frozen to -40 degrees Celsius, a process that immediately locks in its rich flavours and aromatic compounds. This precise freezing ensures that the coffee's integrity is preserved and prevents any degradation of pectin, which could negatively impact the overall quality. By maintaining this controlled environment, the coffee retains its full-bodied taste and enticing aroma, delivering an exceptional experience with every cup.

Vacuum & Secondary Drying

In the initial vacuum drying phase, the frozen coffee undergoes sublimation, where the ice transitions directly from a solid to a gaseous state. This process occurs at low temperatures to maintain the integrity of the coffee’s flavour profile. The secondary drying process is crucial for ensuring the complete removal of residual moisture, which is essential for preserving the coffee's quality during storage. This meticulous approach is conducted for 36 hours, under carefully controlled conditions, guaranteeing that the coffee retains its full-bodied flavour and intricate complexity. By eliminating all traces of moisture, the process prevents any potential degradation of the coffee, ensuring that the essential aromatic compounds remain intact. The result is the purest form of coffee crystals, encapsulating the rich, nuanced flavours and delightful aromas.

Packaging & Final Product

Once dried, the coffee crystals are immediately packed and sealed to protect them from air and light. This meticulous packaging process ensures that every sachet of Sub40 coffee delivers the freshest, most refined taste. Premium freeze-dried coffee dissolves effortlessly in both hot and cold water, offering a seamless and sophisticated coffee experience. This careful attention to detail results in a perfectly balanced cup every time, with each sip delivering a harmonious blend of flavours and aromas.

FAQs

  • At Sub40, we create our coffee using an advanced freeze-drying process. We start by brewing premium coffee, then freeze it and remove the water content through lyophilisation. This method results in high-quality, aromatic coffee that retains the rich, original flavor, giving you an exceptional coffee experience while you can push the boundaries of what’s possible.

  • Simply add hot or cold water or milk to a sachet of Sub40 coffee, stir, and enjoy. Whether you prefer it bold or mild, we’ve got you covered - one less thing to worry about.

  • Our freeze-dried coffee uses premium Arabica beans and a gentle freeze-drying process to preserve natural flavors and aromas, resulting in a rich, high-quality taste. In contrast, other instant coffees involve high heat processes that often degrade the coffee’s flavour and aroma, leading to a more generic taste. Our process of brewing coffee and freezing ensures an exceptional coffee experience by maintaining the integrity of the original beans.

  • Absolutely! Sub40 dissolves perfectly in cold water. For a refreshing iced coffee, simply mix a sachet with cold water and ice, stir well, and enjoy your cold brew anytime.

  • No, Sub40 freeze-dried coffee is made from 100% pure coffee without any additives or preservatives, offering you a pure and authentic coffee experience that we all love.

  • Store your Sub40 sachets in a cool, dry spot, away from direct sunlight and moisture. Our sachets are crafted to shield the coffee from air and light, preserving its essence as nature intended, ensuring every cup is as fresh as the first.

  • Yes, Sub40 coffee is naturally gluten-free, making it a safe choice for those with gluten sensitivities or celiac disease.