I'm using this infusion calculator to determine how much and what the water temperature should be when adding water to my mash tun. A recipe I'm following calls for a protein rest at 122 degrees F for 30 minutes followed by 60 minutes at 155 degrees.
I've entered the first protein rest step using 0.75 qt per pound ratio (I'm aiming for 1.25 per pound in the end). There are 11.5 pounds of grains, so I'm coming up with an infusion temperature of 135 degrees and 8.6 qt of water.
For the second step, I'm assuming we'll lose about two degrees, so my desired mash temperature is 155 degrees, starting temperature is 120 degrees and I have no idea what the infusion water temperature is. Shouldn't the calculator tell me?
What is the calculator asking me? I'm very confused right now!