This French green bean salad comes together quickly with just a few simple techniques. The key is properly blanching the green beans to achieve that perfect crisp-tender texture while maintaining their vibrant color. The Dijon vinaigrette adds a tangy, sophisticated flavor that elevates this simple vegetable dish.

1. Step 1: Prepare an ice bath

   Prepare an ice bath by filling a large bowl with cold water and ice cubes. Set aside.

2. Step 2: Bring water to a boil

   Bring a large pot of water to a rolling boil. Add 1 tablespoon of salt to the water.

3. Step 3: Blanch the green beans

   Add the trimmed green beans to the boiling water and cook for 2-3 minutes until bright green and crisp-tender. For thinner haricots verts, cook for just 2 minutes; for thicker regular green beans, cook for 3-4 minutes.

4. Step 4: Shock in ice water

   Using tongs or a slotted spoon, quickly transfer the beans to the ice bath to stop the cooking process. Let them cool for 2 minutes.

5. Step 5: Drain and dry beans

   Drain the beans thoroughly and pat dry with paper towels or a clean kitchen towel. Transfer to a serving bowl.

6. Step 6: Make the vinaigrette

   In a small bowl, whisk together the minced shallot, Dijon mustard, and white wine vinegar. Slowly drizzle in the olive oil while whisking continuously to create an emulsion.

7. Step 7: Season the dressing

   Add the chopped tarragon, salt, and pepper to the vinaigrette and whisk to combine. Taste and adjust seasoning if needed.

8. Step 8: Dress the salad

   Pour the vinaigrette over the green beans and toss gently to coat evenly. If using, add the halved cherry tomatoes and toss again.

9. Step 9: Let flavors meld

   Let the salad sit for at least 15 minutes at room temperature to allow the flavors to meld. This salad can also be refrigerated for up to 4 hours before serving.

10. Step 10: Garnish and serve

    Just before serving, toss the salad once more and sprinkle with toasted sliced almonds if using. Serve at room temperature for the best flavor.

This salad is delicious served immediately but also holds up well for a few hours, making it perfect for picnics or make-ahead meals. For a more substantial dish, add hard-boiled eggs, tuna, or crumbled goat cheese. You can also substitute the tarragon with fresh herbs like parsley, chives, or dill based on your preference.