You can buy udon noodles in bulk, but the 1-2 serving size is easier to store

They usually come with an envelope of powdered soup base, but the stock tastes a little weak to me, so I usually add a little extra. You can buy the soup base separately:

So------boil 3 cups of water, throw in some frozen shrimp and frozen seafood medley (the one I'm using today contains "Blanched Peeled Shrimps, Blanched Squid Strips and Tentacles, Blanched Octopus Slices, Fully Cooked Mussel Meat and Imitation Crab Meat") and looks like this:

Add the udon noodles, crumble a dried shiitake mushroom cap into the mélange, some wakame if you like, and when the water is at a rolling boil, add an egg and mix thoroughly.
Let simmer for a minute or so, remove from heat and add the powdered stock. Takes about five minutes if you don't have to search for the ingredients!

So how 'bout your favorite recipe for chicken soup, e*c!