The spice level of your dip is going to vary with your jalapeños. Sometimes, they're really spicy and sometimes they're really mellow and there's no controlling that. If your jalapeños are pretty spicy, you can remove some of the ribs. That's where the heat is. If you want to make it spicier, you can add more jalapeño peppers. I think two jalapeños makes the perfect dip, with a hint of spice but not an overwhelming amount of it. But, you can easily adjust that to your liking.