_Mode_.--Melt the butter in a stewpan over a slow fire, and dredge in,
very gradually, the flour; stir it till of a light-brown colour--to
obtain this do it very slowly, otherwise the flour will burn and impart
a bitter taste to the sauce it is mixed with. Pour it in a jar, and keep
it for use: it will remain good some time.
_Time_.--About 1/2 hour. _Average cost_, 7d.
WHITE ROUX, for thickening White Sauces.