Oh, well, couldn't you just dump your frozen milk(1/2) amount then the lye as usual. When it thaws add cold water. Or maybe use ice cubes as your water amount, it would all stay cold that way. I have used ice cubes before. Shannon
I think adding same weight of lye to same of GM will have it burn, even if it's frozen. I've done 100% GM at a 33% solution and that's about as high as I will go cause it's pushing it...But if I mixed ice cubes and frozen gm cubes then added the lye that would be awesome! but it still has the whole have to freeze the water too thing, but I think it's a good idea in a pinch (providing I have ice cubes which we rarely do! LOL!)
I think I'm going to go with making the premixed lye solution. I think in the long run it will be easier all around and I'll only have to freeze my GM for 100% GM recipes.