See the original post here: Hacking Club Mate "imatate"
Brewing was easy. Many people joined, and they did enjoy my special surprise: "Mate jelly shots". So after having a debate over how much gram is a cup for sugar, I just went by visual judgment. Out came two batches, I made a bigger one for Imatate and a small one for Maca Mate. Cooling was definitely an issue, it took ages to heat the huge pot and it took ages to cool it down. So we decided to put everything in the refridgerator and wait for the night to pass.