Combine the apple cider vinegar, Dijon mustard, and honey in a mixing bowl.
This ensures the ingredients start to meld together before adding any oil.
Slowly drizzle the olive oil into the mixture while whisking constantly.
This creates a smooth and emulsified dressing that won't separate.
Stir in the salt, black pepper, and grated apple until everything is well incorporated.
Adding the apple last keeps its flavor fresh and bright.
Taste the dressing and adjust seasoning as necessary.
Feel free to add more salt or honey based on your preference.
Transfer the dressing to a mason jar or bottle for easy storage.
Before each use, give it a good shake to ensure it's well-mixed.