In the past I have had brew efficiencies of between 70 to 75% now all of my batches are down in the 50's. Is the problem that I am not boiling hot enough? I have turned down the burner because I was possibly scorching my beer in the past.
I have 7 lbs of 2row
4 pounds of marris otter
1 lb of lactose
1 lb of crystal 20.
Est SG is 1.070
I came in at 1.060.