Time poor? Use instant dashi for the broth;it just needs to be steeped in water.William MeppemI buy udon noodles from the freezer section at my local Japanese grocer;chewy and satisfying,they’re the perfect kitchen-cupboard staple. I love them served simply with a hot broth topped with spring onion (kake udon) or,in summer,chilled with a dipping sauce (zaru udon).
Niku udon requires a few more steps,but is still very easy. To make the shiitake dashi (stock) from scratch,you’ll need to work at least four hours ahead. Short of time? Buy instant dashi in granule form;it just needs to be steeped in water. Or you can get it in liquid form,which you dilute.
For the beef,my preference is to use scotch fillet since it’s nicely marbled,but rump,sirloin or flat iron are also great options.