Pesto can be used to brighten up just about any type of dish. From pasta to salads, it adds color and intense flavor, with endless possibilities for creativity. You can create myriad variations by changing the oils, nuts, cheeses, and greens used. Experiment with your own flavor combinations and when combining with roasted potatoes, just make sure to always use a waxy potato For this dish, you don't want the potatoes to turn mushy; cooking redskinned potatoes won't affect their texture and shape.