noun
white sauce; béchamel sauce
A basic white sauce made from butter, flour, and milk; used in Western-style cooking and Japanese yōshoku dishes.
グラタンにはホワイトソースが欠かせない。
White sauce is essential for gratin.
ホワイトソースを焦がさないように弱火で温める
Warm the white sauce over low heat so it doesn't burn.