What yeast should I use for very warm temperatures? If wishing to brew clean and neutral character beers at very warm temperatures, we recommend our Kveik yeastThis yeast can be used to ferment neutral character beer styles such as pale ales and IPAs up to 40°C (104°F)! Related articles Why is there a black sludge on the inside of my GF30? What is it and how do I clean it? Can I reuse yeast? Why is there a layer of sediment at the bottom of each of my bottles? Do I have to rehydrate my yeast? What are the best pH pitching levels for brewing beer?