I sent a batch of my Yellow 7s for SHU testing. They came in at 519,400 Scoville Heat Units. At first, I was a little disappointed in the result, thinking that they would be closer to 1 million SHU, but this is way too much fun to get upset about. It does show however, that there are big heat variances within the same types of Peppers, as this is hotter than many red Bhuts that I've eaten.