Initially from the Joy of Cooking.

Combine

1.5 cups all-purpose flour
1/2 teaspoon baking powder
3/4 teaspoon salt
pinch of ground nutmeg

Beat together in a seperate bowl

2 large eggs
1/2 cup water or milk

Add to the flour mixture. Beat with a wooden spoon.

Bring 6 cups of salted water or broth to a boil. In my opinion this
should be 4″ of liquid rather than absolute measure.

Force the batter through a spatzle machine (or potato ricer) into
boiling liquid. Wait until all the bits float to the top, then remove
with a strainer.

I then like to let a small amount at a time dry in a colander.

Possible use:
After 5+ minutes of drying, lightly fry in butter with a splash of mustard.