Question: How come First Wort Hops adds less IBUs than the equivalent added to the 60 minute boil? I read a recommendation to try splitting your 60 minute hops addition (first addition) into two. Put 50% as a First Wort addition and 50% at the 60 minute boil, in lieu of using all at the 60 minute mark. When I did this, the overall IBUs went down, which confused me in my Brewer's Friend recipe. Can someone help me understand how this works?