So I just took a gravity reading of the runnings I have saved in the fridge and it is actually 1.030 (7.5 Plato Trying to convert)....boil that for a few minutes to get it to 1.040 (10plato).
I know 10 Plato is Ideal but it also depends on what you are trying to do when I go to raise up some yeast from bottle dregs I am going to start about 1.020 (5 plato)
and work my way up...
Anyway took some more runnings tonight and just mixed it with the old stuff!
@redalert- as long as you boil that stuff for 10-15 minutes it will kill anything in it! I keep it in a fridge to help it keep a little better.
@shutup - I agree once you switch to all-grain you don't want to spend extra time and money on DME! I was just collecting some extra one day as the boil was starting and it came to me to save it...you would have thought of it too eventually