It's good information, thanks for posting! The most common mis-step is pitching dry yeast directly into must, or into orange juice or some similar "starter". The products mentioned can increase performance, but honestly dried yeast properly rehydrated (that, is in water at blood-warm temp) is very healthy and will perform in most any must. For more stressful musts (high gravity, pH off, low nutrient) then some of the doodads can be helpful to get the yeast to attenuate fully.
Bees, brews and fun
in Lyons, CO