31.   Cook over moderate heat, breaking the sausage up with a wooden spoon, until it is hot throughout.

32.   Cook over moderate heat, stirring constantly, until the sauce boils and thickens.

33.   Cook over moderate heat until bottom is browned.

34.   Cover them and cook over moderate heat, tossing occasionally with tongs, until they are wilted and tender.

35.   Cover and bring just to a simmer over moderate heat.

36.   Cook bacon in a large skillet over moderate heat until crisp.

37.   Cook over moderate heat or in double boiler, stirring constantly until thick.

38.   Cook over moderate heat, stirring constantly, until the sauce is melted and smoothly combined.

39.   Heat the butter or oil in a large skillet over moderate heat.

40.   Heat the olive oil in a large skillet over moderate heat.