Originally Posted by sharphomebrewer
I usually use a starter so rehydrating is a moot point with me.
starters aren't necessary with dry yeast. unless you need to increase the cell count, there is no upside to making a starter. most packets already have the required cell count, and by making a starter you're getting them to consume their food stores in the starter instead of in the beer. they have all the sterols they need so a starter is redundant.