Confused by directions...

What happens to the rest of the liquid that the potatoes simmer in? The directions are a bit confusing - 1/4 cup of milk is whisked with the sour cream, then poured over the potatoes. Then the next step says to spoon the same mixture evenly over the potatoes and broil? Help!

Recipe Reviewed: 
Slimmed-Down Scalloped Potatoes
Recipe Rating: 
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