Cook over medium-high heat until the sauce is thickened, about 10 to 15 minutes.

Continue beating over very low heat until the sauce is thick enough to coat a spoon.

Cook gently until the sauce begins to thicken, about 20 minutes.

Continue stirring gently until the sauce has thickened, less than 5 minutes.

Bring to a boil and cook for about five minutes until the sauce has thickened slightly.

Continue to cook until the sauce has warmed through.

Cook for about 50 minutes, or until the sauce is reduced to one and one-half cups.

Continue until all the sauce and meat have been used.

Cook over high heat until the sauce has thickened and reduced somewhat.

Bring to a boil and simmer until the sauce has thickened, about 30 minutes.