I made a coconut porter a couple of years ago with flaked coconut from an organic cooperative; I added it to the fermenter a week in, I believe (didn't think to toast any of it, though I will next time). The beer was delicious, though the coconut absorbed a lot of the wort, so it was a small batch made smaller. My one regret was not realizing how delicious the wort-soaked coconut would be. I had a couple of tastes before I chucked it, and wished I had asked friends over to have some of it over vanilla or chocolate ice cream.