Prep the ingredients while you are steaming the romanesco in the first step.
- 2 heads of romanesco (2 1/2 to 3 pounds total)
- 2 stalks of celery, thinly sliced
- 1/2 large red onion, or one small red onion, thinly sliced
- 1 cup loosely packed fresh parsley leaves
- 2 Tbsp capers, rinsed and drained
- 1 teaspoon grated lemon zest
- Freshly ground black pepper
- 1 clove garlic
- 3 Tbsp red wine vinegar
- 1/2 teaspoon salt
- 1/2 anchovy, minced (optional, omit if cooking vegetarian)
- 1/4 cup high quality olive oil
1 Steam romanesco wedges: Cut the romanesco heads into quarters, stalk to tip. Cut out the tough core and any outside green leaves. Cut again lengthwise.
Place into a steamer basket in a pot with about an inch of water. Sprinkle the romanesco florets with a little salt. Bring water to a boil. Cover and steam until just tender, about 7 to 10 minutes.
Remove romanesco florets from steamer, place into a bowl, and chill.
2 Soak onion slices in water a few minutes: Thinly slice the red onion, across the grain. Place the red onion slices in a bowl and cover with water. This will take the onion-y edge off the onion, making it easier to eat raw in the salad.
3 Make dressing with smashed garlic, vinegar, salt, anchovy, olive oil: Smash the whole clove of garlic (not cut, just smash with the flat side of a chef's knife) and place in the bottom of a small bowl. Add the vinegar and salt, stir to dissolve the salt. Add the minced anchovy if using. Then whisk in the olive oil.
4 Marinate romanesco, celery, onion, parsley, capers, zest in dressing: Break up the wedges of romanesco into smaller chunks of florets. Place into a large serving bowl.
Add celery, onions (drained of the water), parsley, capers, and lemon zest.
Remove the garlic clove from the dressing and add dressing to the romanesco salad.
Toss to coat with the dressing. Let marinate for at least 15 minutes, preferably an hour. Even better overnight.
Sprinkle with freshly ground black pepper to serve.