Grilled Potato with potatoes

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[...]

2 pounds new potatoes boiled in salted water for about 8 minutes until slightly tender 1 x olive oil or other vegetable oil * 1 x salt and black pepper to[...]