Grilled Salmon Sauce No. 2 with potatoes

I found a huge frozen/boneless Salmon fillet in the supermarket and grabbed it right away without thinking what to do with it. It had been quite some time[...]

1 tablespoon olive oil , plus additional for brushing 3/4 cup sliced shallot 1 garlic clove , thinly sliced 1/4 teaspoon coarse kosher salt , plus additional[...]

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[...]