Cook the pasta according to the instructions on the package. Drain, rinse and drain again. Rinse broccoli and blanch in boiling salter water for 2-3 minutes. Remove from the heat and drain well. Peel garlic and chop finely. Peel shallots and dice. Rinse, dry, halve and remove seeds and ribs of the bell peppers. Slice the peppers into very thin strips. Rinse the oyster mushrooms and cut into bite-size pieces.
In a wok, heat the oil. Add garlic, ginger, shallots and oyster mushrooms. Stir-fry about 1 minute. Add peppers and broccolli, and stir-fry for another 2 minutes. Pour in soy sauce and broth. Stir in sugar. Cover and simmer on low heat for 1-2 minutes. Add pasta and serve.