5ouncessmoked salmonbroken up into bite-size pieces
¼cuptoasted walnutscoarsely chopped
To make the dressing: Whisk together sour cream or yogurt in a medium bowl, 1 ounce of the goat cheese and lemon juice. Whisk in milk, one teaspoon at a time, until dressing reaches the consistency you're after. Whisk in green onions and season to taste with salt and pepper. Set aside.
On a large serving platter, scatter mixed baby greens and radicchio in an even layer. Sprinkle smoked salmon, walnuts, farro and remaining goat cheese evenly over the top. Drizzle with dressing and serve.
Note that cooking time does not include time to cook farro.