The Cretan Dakos Sandwich (Ντάκος) is the open, assembled form of one of Crete's defining preparations. Traditionally dakos is a salad on a barley rusk rather than a sandwich, and the honest framing here is that the sandwich-style version is an assembly built on that same hard rusk: tomato, feta, olives, capers, and oregano stacked on the paximadi instead of tossed loosely. It earns its place in this catalog as a borderline open sandwich, and the reason it works is the rusk's job: it is meant to soak, not stay crisp.
The order of assembly is the entire technique. Start with a thick barley paximadi, the twice-baked rusk that is rock-hard out of the bag. It gets a brief moistening, a quick dip or a sprinkle of water and a generous pour of good olive oil, just enough to soften the surface without turning it to mush. Grated or finely chopped ripe tomato goes on next and is left to bleed into the rusk; this is the step that actually conditions it. Then crumbled or sliced feta, olives, capers, a heavy hand of dried oregano, and more olive oil to finish. Good dakos hits a specific texture: the top of the rusk yielding and tomato-soaked, the core still holding enough structure to lift a piece without it falling apart, the oil and tomato carrying salt from the cheese and capers all the way through. The common failures are timing failures: serving it the instant it is built so the rusk is still bruising-hard, or drowning it so early that it disintegrates into wet rubble before it reaches the table. Skimping on olive oil is the third mistake, because the oil is structural here, not a garnish.
The variations are mostly the cheese and the tomato. Some use crumbled feta, some a softer fresh mizithra; the tomato can be grated to a pulp for maximum soak or diced for more bite. The plated salad form, where everything is tumbled together rather than stacked, is the more traditional presentation and deserves its own article rather than being crowded in here. As a sandwich-style build it stays at its best in the narrow window after the tomato has gone in but before the rusk gives out entirely, which is the whole craft of it.