Man.. reminds me of last saturday.... Me and 3 of my friends met up unplanned, played 3 hours of badminton and it was about dinner so I offered them steak at my place. I knew I had 4 chunks of beef, but I didn't know 1 was striploin and 3 were sirloin. The bigger problem was, if I number my striploin's thickness 5, sirloins were 5, 9, and 11.
I didn't have whole day to defrost them so I warmed them up and felt defrosted enough. But it turned out 9 and 11 thick sirloins were still frozen or chilly inside. Striploin came out medium, and soon after 5 thick sirloin came out medium-mediumrare. And the other two? They took several more minutes and were still mediumrare.
And here's the punch. The 11 thickness sirloin, which I ate eventually, had a random doneness. Whole chunk looked like it was medium evenly everywhere. I cut them to 8 pieces, and guess what, it ranged from veryveryveryveryverywelldone to the point my teeth doesn't go in (might as well call that brick, didn't look charcoal so it's brick), to rare with juice coming out.
Dude am I so glad that their steak came out edible and mine nuked? One of my friends that day is a part time chef too.