Preparation

做醋：

• With a mortar and pestle, pound the anchovy, garlic, and a pinch of salt to a paste, or mince the anchovy and garlic, sprinkle with salt, and mash into a paste with the side of a chef’s knife. Unless you’re using a large mortar, transfer the mixture to a medium bowl. Whisk in the olives, olive oil, orange juice, vinegar, and orange zest. Season to taste with salt, pepper, and more red wine vinegar, if necessary.

Grill the eggplant:

• Prepare a medium-high charcoal or gas grill fire. Brush both sides of the eggplant slices with olive oil and season with salt. Grill (covered on a gas grill; uncovered on a charcoal grill) until golden-brown grill marks form, 3 to 4 minutes. Turn the eggplant and grill until tender and well marked on the second sides, 3 to 4 minutes more. The interior should be grayish and soft rather than white and hard.
• Just before serving, whisk the vinaigrette again and spoon it over the grilled eggplant—you may not need it all—or serve on the side.