
Boston Lettuce Salad with Cucumbers and Shallot Vinaigrette
A light, elegant composed salad featuring tender Boston lettuce leaves and cool cucumber slices dressed with a bright French vinaigrette made from shallots, Dijon mustard, red wine vinegar, and olive oil. Ready to serve in minutes, it's the perfect accompaniment to any main course.
- Prep
- 10 min
- Cook
- —
- Total
- 10 min
- Makes
- 4 servings (about 6 cups salad)
Steps
Before you start
- Wash and thoroughly dry the Boston lettuce—wet leaves will dilute the dressing
- Have all ingredients measured and the shallot minced before you begin
- Use a very sharp knife or mandoline for thin, even cucumber slices
Prep the lettuce and cucumber
- Separate the Boston lettuce leaves and wash them gently under cool running water.
- Pat them thoroughly dry using a salad spinner or clean kitchen towel—any moisture will dilute the vinaigrette.
- Peel the cucumber with a vegetable peeler, then slice it lengthwise into ⅛-inch-thick rounds using a sharp knife or mandoline.
- Set both aside on separate plates.
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Ready when: Lettuce leaves are completely dry, cucumber slices are thin and uniform
Tip: Wet lettuce is the enemy of a crisp salad. Take time to dry the leaves thoroughly—a salad spinner is worth the effort.
Make the vinaigrette
- In a small bowl or jar, combine the minced shallot, red wine vinegar (2 tablespoons / 30 ml), and Dijon mustard (½ teaspoon / 2.5 g).
- Let sit for 1 minute to allow the shallot to soften slightly and release its flavors.
- Whisk in the olive oil (6 tablespoons / 90 ml) slowly and steadily until the vinaigrette looks glossy and well combined.
- Taste and adjust seasoning with a pinch of salt and freshly ground black pepper.
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Ready when: Vinaigrette is glossy, well combined, and has no visible separation
Tip: If the vinaigrette breaks or looks oily, whisk more vigorously or add a tiny pinch of salt to help emulsify it. A slightly thick, creamy appearance means it's properly emulsified.
Combine lettuce and cucumber
- Place the dried Boston lettuce leaves in a medium mixing bowl.
- Add the cucumber slices, being gentle to avoid bruising the tender greens.
- Do not add the vinaigrette yet—keep the components separate until you're ready to dress the salad, which keeps everything fresh and prevents wilting.
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Ready when: Lettuce and cucumber are combined in the bowl without bruising
Tip: Tear any large lettuce leaves by hand rather than cutting them with a knife—cutting can bruise the delicate leaves and cause dark edges.
Dress and serve
- Drizzle the vinaigrette over the lettuce and cucumber mixture and toss gently until all leaves are lightly and evenly coated.
- Be careful not to overwork the salad or bruise the tender lettuce.
- Immediately divide the salad among four chilled salad plates or bowls and serve right away while the lettuce is crisp and the cucumber is cool.
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Ready when: Leaves are evenly coated with vinaigrette, no pooling of dressing at bottom of bowl
Tip: Don't dress the salad more than 5 minutes before serving or the lettuce will begin to wilt. If you must wait, keep the dressing separate and toss just before plating.
Good to know
Tips
- To prevent wet lettuce from diluting your dressing, use a salad spinner or pat leaves dry with a clean kitchen towel after washing. Moisture is the enemy of a good vinaigrette.
- Boston lettuce is fragile—handle it gently when washing and tossing. Tear any large leaves by hand rather than cutting them with a knife, which can bruise and blacken the edges.
- For the best flavor, use a good-quality extra virgin olive oil and taste the vinaigrette before dressing the salad. You may want to adjust the ratio of vinegar to oil or add a touch more mustard.
- This salad pairs beautifully with roasted chicken, grilled fish, or beef. It's also a lovely first course before a heavier main dish.
Make ahead
The vinaigrette can be made up to 1 hour ahead and stored in a jar at room temperature. Whisk or shake before using. Wash and dry the lettuce up to 4 hours ahead and store in an airtight container or loosely wrapped in a clean kitchen towel in the refrigerator. Slice cucumbers no more than 30 minutes before serving.
Storage & reheating
This salad is best served immediately. If you have leftovers, store the dressed salad (covered) in the refrigerator for no more than 2 hours before the lettuce becomes noticeably wilted. The undressed lettuce and vinaigrette can each be stored separately in the refrigerator—lettuce for up to 4 days, vinaigrette for up to 1 week—and tossed together fresh when ready to serve.
Substitutions
- Boston lettuce, leaves separated → Butter lettuce, Bibb lettuce, or a mix of baby lettuces. Boston lettuce's tender leaves are ideal, but any delicate green lettuce works well. Avoid iceberg or romaine, which are too sturdy for this light dressing.
- Red wine vinegar → White wine vinegar or champagne vinegar. Both are slightly more delicate and will produce a milder, more refined flavor. Cider vinegar is too assertive for this classic preparation.
- Shallot → 1 teaspoon minced red onion or 1 clove minced garlic. Shallots are preferred for their subtle sweetness, but these substitutes will work. Use slightly less garlic, as it is more pungent.
- English cucumber (or 2 medium regular cucumbers) → Celery, thinly sliced; or radish slices; or a combination. Any crisp, refreshing vegetable can replace the cucumber. Adjust quantities to match the original volume.
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- Meal
- Lunch
- Cuisine
- French
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