Prepared basil pesto can usually be found in both the canned and refrigerated sections of most grocery stores. For the freshest flavor, purchase the refrigerated pesto.
Balsamic reduction sauce (also called “drizzle” or “glaze”) is a thicker, sweeter version of balsamic vinegar. You can make it at home by simmering it in a saucepan over medium heat until thick and sticky, or purchase is prepared from most grocery stores.