Four snack portions: five of 20 bites each, with one-quarter of all filling and 100 g edible cucumber. Each portion contains 56.5 g drained tuna, 40 g yogurt, 25 g drained chickpeas and one-quarter of lemon and pepper. All cucumber including any edible end pieces counted; no crackers. Keep tuna filling covered at 40°F or below and use within 3 days as a conservative development plan, or sooner if another ingredient requires it. Store cut cucumber separately and use within 1–2 days for texture. Assemble close to eating. Refrigerate within 2 hours, or 1 hour above 90°F; use ice packs for packed snacks. Serve cold. Do not freeze assembled bites. This development recipe has not been kitchen tested. All listed foods included; no optional toppings.