Here's what I have in my files pulled together from several posts at Gails.
Marilyn posted this brief synopsis of Anne in SF’s, original recipe is at Archive 49873
Anne in SF: What I will do for St. Pat's... Posted: Mar 13, 2002
This is how I do corned beef: First I place the corned beef fat side up (I usually do 2 at a time in 1 large pan) on a rack in a pan, sprinkle the contents of the spice packet on top, pour a can of beer over the corned beef, cover pan with foil, and bake at 325 for 2.5-3 hours depending on how large/how many I am making. You can also do Tammy/Arcadia's glaze of Apricot preserves, mustard and horseradish under the broiler after it is baked to finish it off. For potatoes, I do potatoes colcannon (potatoes, some chopped cabbage, little bit of minced garlic, little bit of green onions, little bit of grated cheese all mixed up together to taste) For cabbage, I do a very nontraditional Savoy Cabbage and Lemon Slaw. It's light and tasty and very salady for those who don't particularly care for cabbage. (I do live in California, after all.) I'll do Amy/CT's (31117) Irish Soda Bread Muffins this year, a first for me. Muffins just seem easier/more elegant for a dinner party. I will make the Peanut butter cake & chocolate frosting at 43569. I made it last week and it went over well.
Another post by Anne in SF:
I place the corned beef fat side up on a wire rack, then pour a bottle of beer over (Irish or not, doesn't matter--whatever you have in the fridge is fine). Then sprinkle spice packet over. Then cover with foil. I bake in the oven, 300 degrees one hour per pound, but no more than 3.5 hours in total, even if I am doing 2 corned beefs at the same time (or ~6 lbs). There are a couple of different cuts of corned beef. The fattier one works better. You can always trim the fat before serving/eating.
Sarah in Charleston said: Anne in SF, did your baked corned beef yesterday. Excellent!!!! One person said she did not like corned beef, but really liked this one. It was 4 1/2 lbs, so I went ahead and cooked it for 4 hours. I added some garlic and peppercorns to the spice mix and 2 cans of beer. It was not stringy, did not shrink all up, did not even put knives on the table. I was hoping for some leftovers to make corned beef hash, but noooo. So much easier than simmering - no more boiled beef for me. THANK YOU.