There's something deeply satisfying about a well-made tuna salad sandwich. It's the kind of lunch that hits all the right notes when you need something quick but don't want to compromise on flavor. I've been making tuna salad for years, and I've learned that the difference between a good sandwich and a great one comes down to a few key details. The foundation starts with quality tuna. I prefer chunk light tuna in water rather than oil because it gives me more control over the final texture and moisture level. You want to drain it well but not squeeze it completely dry. A little moisture helps the salad come together without making it soggy. The mayo ratio is crucial too. I use just enough to bind everything without drowning the fish. About three tablespoons per two cans usually does it, but I add it gradually because you can always add more. What really makes this tuna salad special is the combination of textures and flavors. Finely diced celery adds that essential crunch, while a small amount of red onion provides a sharp bite that cuts through the richness. I always add a squeeze of fresh lemon juice and a pinch of black pepper. These simple additions brighten the whole mixture and prevent it from tasting flat. Some people like hard-boiled eggs in their tuna salad, and that works beautifully here too. This sandwich is perfect for lunch at home, packed for work, or served at a casual gathering. I like it on toasted challah or rye bread with crisp lettuce and sliced tomatoes when they're in season. It pairs well with pickle spears and some good potato chips on the side.