Line a plate with paper towels or a kitchen towel and arrange the tomatoes on top. Season them all over with salt and set aside to drain.
Meanwhile, zest and juice the lemons. You should have two tablespoons of zest and at least one-quarter cup of juice. Transfer the zest and three tablespoons of the juice to a blender or food processor, then grate the garlic into the blender. Drain the tuna and anchovies, but don’t toss the oil. Add the tuna, anchovies, mayonnaise, mustard, capers and a few good grinds of pepper to the blender. Blend the mixture on medium speed until very smooth, a minute or less. With the blender running, slowly drizzle in two tablespoons of the reserved tuna or anchovy oil. Taste the tonnato and season with more lemon juice and salt as needed.
Arrange the tomatoes on a serving platter and pour over as much tonnato as you’d like (I like a lot of tonnato). Drizzle with olive oil, and sprinkle with a bit of flaky salt, more pepper and chile flakes (if using). Serve immediately.
Directions
Credits
Description:
Recipe reprinted from Big Night: Dinners, Parties, & Dinner Parties by Katherine Lewin © 2024. Published by Union Square & Co. Photographs © Emma Fishman.









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