1/2 cup mayonnaise |
1/2 cup finely chopped red bell pepper |
1/2 cup finely chopped yellow bell pepper |
1 tablespoon finely chopped drained capers |
1 tablespoon dijon mustard |
1 tablespoon plus 1 teaspoon finely chopped fresh tarragon leaves, or to taste |
2 teaspoons finely chopped fresh chives |
1 1/2 teaspoons fresh lemon juice, or to taste |
a 1 1/4-pound celery root (sometimes called celeriac) |
1 pound small sea scallops (about 30) |
1 tablespoon olive oil |