Toss all of the salad ingredients.
Whisk together the olive oil, lemon juice, sugar, salt, and mustard until the sugar is completely dissolved. Taste and add more lemon until it has enough of a lemon flavor for you. Add more honey if it becomes overwhelmingly acidic.
Stir poppy seeds into the dressing.
Serve salad dressing on the side and allow people to dress their salad to taste.
