This bright cilantro jalapeño sauce is highly adaptable to your personal taste. If the lime makes it too tart, balance it out by mixing in extra mayo or sour cream. Want even more of that fresh cilantro flavor? Throw in more leaves. When it comes to jalapeños, it can be hard to judge their spice level before cutting them open. I recommend cutting one in half and tasting a piece to check the heat before adding. Jalapeños can range from as mild as a bell pepper to hotter than a serrano. Adjust the amount you use based on your desired spice level. The versatility of this sauce makes it easy to customize to your preferences. Play around until you get the perfect lime, cilantro and jalapeño balance to match your tastebuds.