The only difference is using ice water instead of hot water. Preparation is the same: fill the gourd with yerba, pour water, spit out the first mouthful to clea

The only difference is using ice water instead of hot water. Preparation is the same: fill the gourd with yerba, pour water, spit out the first mouthful to clear the dust, pour water again and drink. In other words, if you have the leaf you can make either version. Apparently the cold version has less PAH. Not sure if this is a practical concern but for what it's worth there's literature. https://www.sciencedirect.com/science/article/abs/pii/S0956713515301341 https://www.sciencedirect.com/science/article/abs/pii/S09567...