Located in Kassel, Germany, Roest Space is known for its clean, expressive light roasts and its curiosity-driven approach to coffee. Always seeking balance and consistency, the team began using APAX LAB mineral concentrates around three months ago, and it quickly became an essential part of their workflow for filter coffees.
How Roest Space Uses APAX LAB
They offer APAX LAB as an optional enhancement for their filter coffees, inviting customers to experience how minerals transform clarity and structure. Behind the bar, they also use the concentrates to widen the window for light-roast espresso shots, giving baristas more control over the cup they are serving.
Introducing APAX LAB to Customers
As the drops are added to the coffee, baristas explain how APAX LAB unlocks the full flavour potential of the coffee, helping clients understand how small changes in water composition can have a big impact on the cup.
This approach turns water into a conversation - an entry point into how chemistry shapes sensory experience!
Customer Reactions
Most customers are amazed by the difference. Many remark that it’s surprising how just a few drops can change the texture and expression of their coffee.
It’s an approachable way to show the impact of water and minerals as not just abstract and complex concept, but as something that can easily be felt and tasted with just a few drops.
Favourite Profiles & Recipes
For filter brews, Roest Space’s go-to is TONIK, allowing to enhance clarity and juiciness, perfectly matching their focus on light-roasted coffees.
For espresso, they turn to JAMM, which helps tame acidity and bring smoothness to their light-roast doubles.
Their preferred ratio for filters?
1–3 drops of TONIK, which is just enough to make the coffees shine.
Final Thoughts
“APAX LAB is an incredibly handy addition to our coffee shop — it helps us save money and make the best out of our coffees.”
Roest Space shows how a small adjustment can make a big difference. By integrating APAX LAB into their service, they’ve created a bridge between science and taste, bringing clarity and balance to every cup.
