Salads with wine

1/2 pound green beans 8 ounces, or wax beans, or purple beans, ends trimmed 1 pound new potatoes halved 1 x salt to taste * 3 tablespoons red wine vinegar 1[...]

1 medium red onion , sliced into 1/4-inch rings 1 hothouse cucumber , sliced in 1/3-inch thick half-rounds 2 vine-ripened plum tomatoes , cut into half-wedges[...]