is it a good idea to recover yeast after fermentation? I was told we should develop a strain that works in the environment we will be - I will be in panama where the temperature never goes much below 80 degrees , I can cool the area in the afternoon with some fans and AC, but since I know very little about this subject, I though Id ask. Can you, over time develop a yeast that would get stronger with each generation or is that not the case?