Mix all ingredients together in a bowl. Taste for balance of sweet, sour, salty, and spicy, aadjusting seasonings as needed. Set aside.
To make Salad:.
Slice the ends off the oranges and grapefruit. Stand fruit on a cutting board, and slice away the skin and pith from outside with a knife.Cut fruit into segments, removing membranes, and move to a bowl. Toss lightly with arugula, shallot, and mint.
Toss with the dressing. Serve garnished with nuts and sesame seeds. Enjoy!