In a large bowl or the bowl of a food processor, mix flours together. Make a well in the center of the flour if not using a food processor, and add the eggs, olive oil and dill, if using. Begin incorporating the flour into the eggs a little at a time, mixing until a very loose messy dough forms. If using a food processor, blend until a shaggy dough forms. In both cases, finish by kneading the dough by hand until a smooth dough forms. Wrap the dough and allow to rest at room temperature for 1 hour. Roll it out with a pasta machine, or by rolling pin, and then cut into fettuccine strands.
Serve with Wild Salmon in Creamy Dill Sauce.