The mixture in the bowl is cabbage, carrots, onions, ginger, garlic, and any kind of spices you like. Chop finely, and mix. Take regular ol' won ton wrappers you find at the local "Asian" market...or the one we go to- Pacific Ocean Market.
Stuff the won ton wrappers, fold into triangles, and tightly press the sides together with little folds to seal.
If you do not have a steamer, no worries, use a makeshift steamer, with a metal pie tin. Simply poke holes all over the bottom of the pie tin, place over a large pot filled half way with water, cover, and let steam until won ton wrappers are cooked through.
I am not sure how to make this sauce, all I know is it was tasty, but is some kind of Nepali red sauce that is spicy. I suppose you could use any sauce you like, such as a pot sticker sauce, or a gyoza sauce. Eat Momos after dipping in whatever sauce you like.