
Even relatively mild chilies like Jalapeños come in different shapes and sizes. Some are indeed mild, others surprisingly hot. Unless you grow your own hot peppers, always give them a taste before using. That way you can easily adjust the heat level. I actually prefer my Salsa Verde on the mellow side, so I use 1 or maybe 2 mild Jalapeños. You can step up the game as you see fit or even use hotter varieties like Serrano for an extra punch.