This is a recipe I have adapted from a Martha Stewart cook book.
For the broth:
4 oz rice noodles.
4 cups Beef Stock.
3 tbsp Nam pla (Asian fish sauce)
5 star anise
2 cinnamon sticks
2 rounds of ginger
1 tsp. ground pepper
1 pound very lean sirloin of beef.
small onion, sliced thinly
1 lime, quartered
Hoisin (optional. Makes it too sweet, I think).
Freeze the sirloin for a about an hour so you can slice it thinly.
Soften the noodles in a bowl with hot water.
Combine stock, water fish sauce and spices in a large pot. Simmer broth for one hour (this should reduce the stock enough that you don't need more salt but if you do, add some.)
Slice sirloin as thinly as possible and pop it in the hot broth. Garnish with limes, basil, sriracha, onion and jalapeno. And hoisin if you must.