Japanese Sesame Cold Udon Noodles

4 cups cooked udon noodles
1 tsp minced cilantro
1/3 cup julienne five spice firm tofu or smoked setan
1/8 cup blanched Chinese celery
1/2 cup blanched mung bean sprouts

Spicy Mustard Sauce
1 tbsp Japanese dark sesame oil
2 tsp Japanese spicy yellow     mustard
2 tbsp soy sauce paste
1 tsp Japanese sushi rice vinegar
1 tbsp water

For the sauce, mix sesame oil, mustard, soy sauce paste, water, vinegar.  Mix the chilled noodles in the sauce.  Plate the rest of the ingredients when ready to serve. 

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