1 teaspoon dried sweet basil
1/2 ripe avocado, pitted and peeled
1/4 cup plain Greek yogurt
2 scallions, roots trimmed off, green and white parts chopped
2 tablespoons white wine vinegar or lemon juice
1 garlic clove, peeled, or 1/2 teaspoon garlic powder
1/4 cup olive oil 1/4 cup fresh parsley or basil leaves, chopped
1 tablespoon chopped fresh tarragon leaves or 1teaspoon dried tarragon
1/2 teaspoon salt
Put the avocado, yogurt, scallions, vinegar or lemon juice, and garlic in the blender or food processor fitted with the steel blade. Put the top on and process until smooth.
Add the olive oil, parsley or basil, tarragon, and salt and process until completely blended.
Taste the dressing on a piece of lettuce. Does it need more vinegar? A pinch of salt? If so, add it, then blend again.