Grilled Salmon with Potato and Watercress Salad

3 pounds red potatoes small, thin-skinned 1 cup red onion thinly sliced 1 cup rice vinegar seasoned 1/2 pound watercress rinsed and crisped 1 each salmon[...]

3 pounds red potatoes small 1 cup red onion thinly chopped 1 cup rice vinegar 1/2 pound watercress rinsed and crisped 2 pounds salmon fillets 1 tablespoon soy[...]

1 lb fingerling potato (or other small boiling potatoes) 1/2 teaspoon salt 3/4 cup champagne vinegar 1 tablespoon sugar 1/2 medium red onion , diced 1 cup[...]