Soy Butter Udon (Pan-Tossed Udon in Caramelized Soy Butter)
Butter-browned button mushrooms and soy sauce bubbled briefly at the edge of the pan coat thick udon in a salty, nutty glaze. The blanched udon needs a thorough drain, because any water clinging to it thins that sauce. The mushrooms cook until dry and browned at the edges for the same reason, adding meaty depth without leaving liquid in the pan. Hitting the hot metal lets the soy reduce almost instantly, and it has to be stirred into the mushrooms before it scorches. Most of the butter is used for frying; a small piece melted in after the heat is off brings back its aroma and gives the noodles a final gloss.