Where did the Jalapeno come from? There are many different varieties...I've eatin' some scorching Jalapenos....although that was back in the day before I started consuming habaneros and super hots....but still, I remember some that would just light me up, while others fell short. I'm sure a Jap can build up quite a bit more than 8000 scoville. It's just an average. Just like the Mouruga blend. It's mean heat was 1,400,000 something scoville....it's highest was over 2,000,000. So I'm sure that you can get a Jalapeno that hits the 50,000 shu level.