Place the olive oil, white wine vinegar, lemon juice, maple syrup (or honey), Dijon mustard, minced garlic, sea salt, and black pepper in a small bowl. Whisk vigorously until the mixture is well blended and slightly emulsified.
Taste the dressing and adjust seasonings if needed. Pour the vinaigrette into a clean container. Shake well before serving, and refrigerate for up to two weeks.