Vegan
From The Enchanted Broccoli Forest, Mollie Katzen

Make this at least a day ahead, so the cucumbers can fully absorb their marinade. In this case, "wilted" doesn't mean tired, it means relaxed. This keeps beautifully in the refrigerator for two weeks or longer.

2/3 cup vinegar (wine or cider)
1/3 cup water
4 Tbs. Honey or sugar
1 tsp. Salt
1/2 cup thinly sliced red onion
4 medium-sized cucumbers, peeled, seeded, and thinly sliced
fresh black pepper to taste
2 Tbs. Minced fresh dill (or 2 tsp. Dried)

Combine the vinegar, water, honey or sugar, and salt in a small saucepan. Heat just to the boiling point, then remove from heat. Place the onion and cucumber slices in a medium-large bowl, and add the hot liquid. Cool to room temperature; add pepper and dill. Transfer to a jar with a tight-fitting lid. Chill until cold.