My family was very nice to me this Christmas and I got a bayou classic burner and an 32qt. pot with 2 ports and a bazooka screen as well as an immersion chiller. I had built a 10 gallon mash tun over the summer (I was doing partial mashes for the last couple batches) so now I am ready for all grain full boil 5 gallon batches. Only thing is I have never done this before (can't wait though) so I don't know the efficiency of the system. I picked my first recipe, my fiance loves the rogue hazelnut nectar so I am going to attempt to duplicate that as best I can.
My question is this, when do you measure the OG to determine if you have missed your mark? I purchased my ingredients along with 1 lb. of Light DME. I only need about 1 cup of that for my starter so I figure if I miss my OG I could use the rest of that to hopefully get to where I need to be. So, when would I measure the gravity of the wort to determine if I need to add the DME? Do I check it immediately after the I have sparged (pre-boil) or do I check after the full boil and hop additions? If the later is the case obviously I would need to boil a small 'wort' for the dme so how would I calculate how much I would need to use?
BTW: here is the recipe I think I am going to be using (any suggestions are also welcome): http://brewershub.com/recipes/rogue-hazelnut-brown-nectar-clone
Totally psyched for all grain brewing (or 95% grain brewing if I need this DME after missing my mark)!