With the bottom of a glass jar or side of a knife, lightly crush the garlic clove.
To a 8-oz mason jar, add the crushed garlic clove, salt, mustard, and maple syrup or honey, using a fork or small whisk to combine.
Add the apple cider vinegar, add the lid, and shake vigorously until the salt has dissolved and all the ingredients are combined.
Add the olive oil and pepper, add the lid, and shake vigorously until the vinaigrette has emulsified. Taste and add additional salt or pepper if desired. Remove the garlic clove and discard, or set aside for another use. Alternatively, keep the garlic clove in the jar to infuse the dressing with a stronger garlic flavor.
Store, refrigerated, for up to 5 days. To use, allow to come to room temperature, and shake well to recombine.
This recipe makes about 7 tablespoons (or just over 1/3 cup) of dressing which will serve 7 if you use 1 tablespoon per serving.For a stronger garlic flavor, grate or finely mince the garlic and add in step 2. Use maple syrup for a vegan option. Omit honey or maple syrup for a Whole30, low-carb, low-sugar option.