Your body needs 3mg of caffeine per kg of body weight to perform better. Designed specifically for the performance market, the Strong Brew delivers a concentrated cup of coffee with up to 257mg of caffeine per cup. Fuel your passion with a clean cup of coffee, containing nothing but caffeine and antioxidants. Discover the Strong Brew today. The Strong Brew: The Strong Brew coffee maker combines pressurised and immersion brewing to give you a short, strong cup of coffee. The patented helix chamber technology was designed and developed in the UK for a streamlined twist that doesn’t apply pressure to your cup. The vacuum sealed immersion chamber features airtight silicone seals for stronger coffee extraction.