If you love really spicy Sriracha, reverse the proportions of the serrano and jalapeno peppers. And if you think that's not gonna be hot enough for you, sub the chiles for Scotch bonnets and Thai chiles. I'm not responsible for the burning of your mouth or bottom if you go this route! This is also a great way to preserve your once-a-year chiles like New Mexico Hatch or home grown.