01 - Place eggs in a saucepan and cover with cold water. Bring to a boil, then cover, remove from heat, and let stand for 10 minutes. Cool under cold running water, peel, and quarter.
02 - Boil baby potatoes in salted water until fork-tender, approximately 10 minutes. Drain, cool thoroughly, and cut in half.
03 - In a large serving bowl, combine mixed salad greens, cherry tomatoes, sliced red onion, cucumber, and cooked baby potatoes. Toss gently to distribute evenly.
04 - In a small bowl, whisk together extra virgin olive oil, apple cider vinegar, wholegrain mustard, honey, salt, and pepper until fully emulsified and smooth.
05 - Drizzle the mustard vinaigrette over the salad mixture. Toss gently to coat all ingredients evenly without damaging the greens.
06 - Top the dressed salad with quartered hard-boiled eggs, Irish cheddar cheese cubes, and pickled beets if desired. Garnish with additional freshly ground black pepper.