- Use the garlic clove to wipe the inside of a small bowl, coating it with as much garlic oil as possible. Remove and discard the clove.
- Add the mustard and the vinegar together with about one-third of the olive oil, and whisk until emulsified.
- Add 1 Tbs. water, and add the rest of the olive oil slowly, in a thin stream, whisking constantly.
- Add the salt and white pepper and whisk in.