In store-bought pestos, you may find unnecessary salt, potato flakes, sugar, lactic acid, ascorbic acid, a lower quality oil blend instead of only olive oil, dried garlic instead of fresh garlic, and cheese culture instead of real cheese, iodized salt, and potato starch.
It's simple, and convenient to make pesto and it will taste better than store bought, and it's better for your health. All you need is fresh garlic, fresh herbs, olive oil, and sea salt. From there, you can add nuts, parmesan cheese, lemon, or even cherry tomatoes. Here is a popular recipe, along with modifications, and serving ideas.
Using a mini food processor (which blends well and is easy to clean up). Blend the nuts and garlic until minced, then add the herbs, olive oil, lemon, and salt. Blend again until well combined. Add cheese blend again. Taste. Add more basil, lemon, or salt as you like.