Originally Posted by stixobutta
I have wondered similarly however I think you'll find there is much debate. Beer under 1.070 SG doesn't need additional cells. I've heard the opposite. Your beer will be fine. I recommend oxygen/aeration prior to pitching. That will slow the yeast to work more efficiently.
Interestingly I've also seen side by side samples of under, ideal, and over pitched brews and the under pitched typically wins the challenge with its nuances... Something to experiment with for sure.
a beer 1.040 and under wont need additional cells
your beers will still ferment fine. and im sure they will taste fine. but for a good healthy ferment, you want to pitch more yeast. you are underpitching A LOT if you pitch 1 smack pack into 1.070 wort. your fine beers could be great with proper pitching rates
starters are really easy to make. www.mrmalty.com
pitching rate calculator will tell you how many cells you need, and the size of the starter you need. if you have a scale, 100grams DME for every liter of starter.
youtube yeast starters. its really easy. and your beers will improve