My late father-in-law once cleaned all of the connective tissue out of the thawed meat from several deer. It took him a complete day. The result was the best meat that we ever had. It could be ground and made into fantastic hamburgers with no additives. I simply do not have the patience for this. I believe that the refrigerator thawing was the perfect aging process, but his meticulous removal of connective tissue was the reason it was so good.