Wash and spin-dry your mixed greens and radicchio completely to prevent a watery salad; excess moisture dilutes the vinaigrette and prevents proper coating.

Whisk the Dijon mustard with balsamic vinegar and lemon juice first before slowly drizzling in olive oil to create a stable emulsion that clings better to vegetables.

Add maple syrup gradually while tasting—start with ½ teaspoon per 3 tablespoons vinegar to achieve the perfect sweet-tangy balance without overpowering the fresh vegetables.

Cut cucumber and tomatoes into similar-sized pieces and thinly slice the fennel to ensure even texture and prevent larger pieces from dominating the bite.

Toss the salad with vinaigrette only moments before serving to keep greens crisp and maintain the vibrant, fresh quality that makes this dish special.