
These bright, refreshing bites are everything you want in a light appetizer or easy lunch — cool, crisp cucumber cups loaded with a zesty tuna filling that's packed with fresh dill, lemon, and a hint of ginger. The filling comes together in one bowl, and the cucumber rounds do all the heavy lifting as a naturally grain-free vessel, so there's no bread, cracker, or wrap in sight. That makes this a genuinely stress-free option for anyone navigating grain sensitivities, since the whole recipe sidesteps flour-based components entirely without any substitutions or workarounds. The coconut-based mayo keeps things creamy and cohesive while letting the lemon zest and fresh herbs really shine through. Finely diced celery adds a satisfying little crunch to every bite, and the ground ginger gives the filling just enough warmth to keep it interesting. These are the kind of party bites that disappear fast — elegant enough for a platter at a gathering, but simple enough to throw together on a weeknight.
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Slice the cucumbers crosswise into rounds about 3/4-inch thick — you should get 18–20 rounds per cucumber. Use a small spoon or melon baller to scoop a shallow well into the center of each round, leaving the bottom intact so the cup holds its filling.
In a mixing bowl, combine the drained tuna, coconut-based AIP mayo, lemon juice, lemon zest, fresh dill, celery, chives, salt, and ground ginger. Stir until evenly combined and the tuna is broken into small, uniform flakes.
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