I have looked for the same delicious sauce. I tried the link someone left for you and my computer didn't connect. Did you have any luck? I have tried a sauce that had ginger and soy and it was pretty good--(but it's not quite right)here it is:

1-1/2 lbs. broccoli

Dressing:
2 T. sesame oil
1-1/2 (T?) vegetable oil
1/2 t. crushed red pepper
1-1/2 T. minced garlic
1/4 c. soy sauce
1 T. sugar
1 T. lemon juice

Chop broccoli into 1-1/2 pieces, both florets and peeled stems. Heat oils in a saucepan, add red pepper. Remove from heat, let stand for 10 minutes, then add garlic, soy, sugar and lemon juice, stir to dissolve the sugar. Steam
the broccoli until almost tender. Cool under running water, toss with dressing in a bowl and serve at room temperature or chilled.