As beautiful a salad bouquet as you can imagine, with a lilting taste to match. If flowers are not to be found, leave them out—but don’t expect the same charm.
Combine salt, sugar, orange zest and juice, fennel, vinegar, and pepper, stirring to dissolve crystals. Whisk in both oils.
Trim rootlets from mâche; gently swish around in water, then lift out. Repeat as needed until no grit remains. Blot on soft towel. Cutting from the base, trim cores from each endive head. Separate leaves. Rinse and spin-dry. Chill mâche an