Similarly one may ask, can you use serrano peppers instead of jalapeno?
The serrano chili is the most obvious substitute for the jalapeño available. They have a similar taste profile and they even look alike, with the serrano being a little thinner around the exterior and the jalapeño being a little more thick-walled. The difference is really in the heat.
Furthermore, what pepper is similar to Serrano? The best substitute for serrano pepper: Jalapeño pepper
That's right. The most popular chili in the world is a terrific substitute for the serrano.
In this manner, how hot is a serrano pepper compared to a jalapeno?
Serrano peppers (pronounced seh-RAH-noh) are hot, literally. With a ranking of 5,000 to 15,000 Scoville units on the chili heat scale, serranos are up to five times hotter than their cousin, the jalapeño. (Jalapeños are rated at 2,000 to 5,000 units.
Is a serrano pepper hotter than a habanero?
Habaneros are definitely hotter than serrano peppers, and it's not even close! The higher up you go on that Scoville scale the hotter it gets, and the habaneros have a capsaicin concentration that's about ten times as high as serranos — that's some heat!