Basil vinegarette salad dressing

• 1 shallot roughly chopped
• 2 cups tightly packed fresh basil leaves stems removed (about 4 ounces)
• 1 clove garlic
• 1/2 teaspoons red pepper flakes
• 1/2 cup olive oil
• 2 tablespoons red wine vinegar
• 1 teaspoon kosher salt