I'm making mini batches with IPAs(4-5 liters/ca 1,5 gallon), and with my three first brews I've used dry yeast. On my next mini batch I'll use liquid yeast(WLP005), do I need to make a starter or is the batch small enough to just put the yeast in.
I have also read that if the O.G. is at a certain level I need to make a starter. How do I know the O.G. level without starting making my brew?