Courtesy of Bon Appetit, this salsa is incredible. A new twist on your basic guacamole.

1 tablespoon sesame seeds
2 tablespoons unseasoned rice vinegar
1 tablespoon mirin (sweet Japanese rice wine)*
2 teaspoons soy sauce
1 1/2 teaspoons Asian sesame oil
1 1/2 teaspoons coarse kosher salt
1 teaspoon wasabi paste (horseradish paste)*
2 cups coarsely chopped trimmed watercress (leaves and tender stems from 2 medium bunches)
4 green onions, thinly sliced on diagonal (about 1 cup)
1/2 cup 1/3-inch cubes peeled jicama
2 large avocados, halved, pitted, peeled, cut into 1/3-inch cubes