I asked before and got some help and have done some reading since. The temp in my mash jumped from 175 to about 195 after I put the lid back on. How much damage did I do? Some things I've read since ...
I don't have a whole lot of experience (I've been brewing all-grain for less than a year) but I've found that every beer I've made with Munich or Vienna malt (usually 2 - 4 pounds in a 6-gallon batch) ...