I got a vial from the White Labs vault, and I'd like to cultivate it. I THINK I have an understanding of what to do, but I want to make sure I'm 100% so I don't have to learn the hard way. 1. boil and sterilize a mason jar, let it cool. 2. Sterilize a pot, dissolve DME to about 1.030, and boil for about 5-10 min, let it cool down. 3. pitch some yeast from vial into the DME solution, and let it chew for about an hour? 4. Once I notice separation of trub and yeast, carefully pour out the liquidy yeasty part into a new sterile jar. 5. label, put in freezer. then when I need it, just defrost and pitch another starter on it? Any specifics or steps that anyone can clue me in on?