Chicken and Grape Salad with Cashew-Tarragon Dressing

INGREDIENTS

3/4 lb

Chicken breast, boneless skinless

head Boston lettuce, leaves

1 1/2 cups

Grapes, green

head Radicchio

1/4

Red onion

Shallot, small

1 1/2 tbsp

Tarragon or chives, fresh

2 tsp

Tamari, reduced-sodium

1/3 cup

Cashews, raw unsalted

6 tbsp

Grape juice, unsweetened white