Labneh ma' Khiyar (لبنة مع خيار) is the cooling form of the labneh sandwich: thick strained yogurt with cucumber, built into bread for something fresh and light. The angle is contrast of texture and temperature. Labneh is dense, tangy, and rich; cucumber is wet, crisp, and almost neutral, and the point of the pairing is the way the crunch and water of the cucumber cut the weight of the yogurt so the sandwich stays refreshing instead of heavy. Get the balance and every bite is creamy then clean; get it wrong and either the cucumber drowns in labneh or it sheds so much water that the bread goes slack.
The build is short and the handling of the cucumber is where it is decided. Thick labneh is spread in a real layer across split khubz or pita. Cucumber goes in sliced thin or diced small, ideally salted briefly and patted so it stays crisp without bleeding water into the spread. A pour of olive oil goes over, with fresh mint or dried mint almost always present because mint and cucumber belong together, and frequently a little garlic worked into the labneh or a pinch of salt to season the whole. The bread is folded or rolled tight. Good execution shows labneh that holds its body, cucumber that is still crunching rather than limp, a clear hit of mint, and bread that is dressed but not soaked. Sloppy execution uses watery unsalted cucumber that thins the labneh to a runny mess, skips the mint so the pairing tastes blank, or thins the yogurt itself so there is nothing for the cucumber to play against.
It varies mostly by how the cucumber is cut and how the mint is used, since there is little else moving. Thin slices read delicate and even; a small dice keeps more distinct crunch and reads fresher. Fresh mint torn through is bright and green; dried mint rubbed in is rounder and more savory. A garlic-forward labneh sharpens the whole thing toward a dip-like profile, while a plainer one stays gentle. The carrier shifts it too: a plated version with torn bread is a light meze, while the tight roll is a quick cooling snack. This cucumber form sits alongside the za'atar and preserved-ball versions of labneh, each its own recognizable build worth separate treatment. What labneh ma' khiyar reliably delivers is rich tangy yogurt kept light by crisp cucumber and mint, eaten cool with bread.