Why Butter Doesn't Belong In Pasta Salad

Butter may be one of the best ingredients for hot pasta, but when it comes to cold pasta salad, the compatibility completely changes. The issue is due to temperature; while butter melts when tossed with steaming noodles, it starts to firm and harden at lower temperatures. Instead of providing a silky, creamy texture, cold noodles can make butter can feel greasy and waxy.

The undesirable texture is especially noticeable after the pasta salad has been sitting in the fridge. In the cold salad, butter can harden into uneven patches, making some bites taste rich, while others taste totally dry. Even if you take it out of the fridge, butter will remain a solid at room temperature and up to 80 degrees Fahrenheit, so setting it on the counter to "warm" won't work. But your cold pasta salad should taste fresh and light anyway instead of savory and fatty, so opt to toss in something with more acidity and brightness (we've got some suggestions!) for it to be a hit at summer picnics and BBQs.

Chief among other alternatives to butter is olive oil. This is the gold standard for a pasta salad recipe because it remains a liquid at cold temperatures, and it also helps ensure that the noodles don't stick together. It also blends well when incorporated into a classic dressing of vinegar, lemon juice, mustard, and spices. Olive oil itself can have a wide range of flavors, including bright, grassy, acidic, and sometimes even spicy notes that complement other ingredients in Mediterranean-style pasta salads (think fresh herbs, olives, tomato, feta, and arugula). 

If you're making a cold pasta salad with Asian-inspired ingredients, consider using sesame oil for a rich and nutty twist. When in the mood for a creamy pasta salad, mayonnaise-based dressings can also work well. While mayo does cling to the noodles, it doesn't solidify in the same way butter does. Greek yogurt is another creamy base option, and tahini or baba ghanoush are solid choices if you want to keep the dish dairy-free.

Now for a prep tip: A common mistake people make with pasta salad is not dressing it while the noodles are still slightly warm so they absorb flavor. The heat allows for the dressing to soften and move around more easily and distribute throughout the salad. Have leftovers? After sitting in the fridge for a few days, consider topping the salad with a bit more dressing, as the noodles might have dried out a bit.