In a salad bowl, whisk together the red wine vinegar, sugar, a pinch of salt, and a few grinds of black pepper until the sugar dissolves.
Assemble Salad:
Add the hard-boiled egg wedges, tomato wedges, and sliced onion to the dressing in the salad bowl.
Gently fold the ingredients to coat them evenly with the dressing.
Chill:
Refrigerate the salad for at least 2 hours to allow the flavors to meld and develop.
Serve:
Before serving, sprinkle the chilled salad with finely chopped fresh flat-leaf parsley for a burst of flavor and freshness.
Notes / Tips / Wine Advice:
This rendition of the classic tomato and egg salad boasts a tangy-sweet flavor profile brought together by the red wine vinegar and sugar combination. It's a refreshing and delightful salad that doesn't rely on oil, making it a light and delicious option for any meal.