How long do you cook 2 corned beefs together?!
Answers:
Just marginally longer than you cook one. I assume you are simmering them in water. If you are roasting them, then perhaps 20% longer to allow for the cooling aspect that the other roast has on oven temp
Until they are fork tender, assuming you are simmering them.
Mine is about ready.
take them 1 at a time