Say BeerSmith3 indicates that I need a 1 liter starter for my all-grain Porter recipe. I put the required 3.38 ounces of dry malt extract into the indicated 1 liter of water, which shows that it is going to provide a 1 liter starter at a specific gravity of 1.036. However, I know that I am going to lose about 150 ml due to boil off when I boil the starter for 20 minutes.
My question is, does this mean that I then only have an 850 ml starter?
Do I need to start out with more water, like 1.15 liters, so that I will end up with 1 liter after the boiloff? Do I then have to add more than 3.38 ounces of DME because I am then using an extra 150 ml of water, more than BeerSmith indicates?
Or is the 1 liter starter shown as needed in BeerSmith the starting amount of water, and I don't have to worry about how much boils off? Is the 1.036 specific gravity the value I have with my after-boil 850 ml, or is it 1.036 before I boil it, and then a different value after the 150 ml are boiled off?
Or am I just overthinking this? What is the correct interpretation?
My question is, does this mean that I then only have an 850 ml starter?
Do I need to start out with more water, like 1.15 liters, so that I will end up with 1 liter after the boiloff? Do I then have to add more than 3.38 ounces of DME because I am then using an extra 150 ml of water, more than BeerSmith indicates?
Or is the 1 liter starter shown as needed in BeerSmith the starting amount of water, and I don't have to worry about how much boils off? Is the 1.036 specific gravity the value I have with my after-boil 850 ml, or is it 1.036 before I boil it, and then a different value after the 150 ml are boiled off?
Or am I just overthinking this? What is the correct interpretation?