Originally Posted by botigol
pelipen: Would you explain that a little more? From what I have read it seems like a two-step starter would require one large 1.5 gallon or so container; the largest I have is one gallon.
Sure. It seems like most of us crash cool and decant between steps, so if you do 1 liter, then 2 liters, and crash between, you'll only have a little over two liters in the second step, but you'll get a lot more yeast.
You could crash, decant and step up again to 3, 3.5 or 4 if you are daring. If you didn't decant, you'd exceed the container volume.
Yeastcalc.com has a good calculator for stepped starters. Wyeast has one too, and assumes you don't decant. I very rarely don't decant, but it adds a solid day or more if it's a low flocc'ing yeast.