Ripert's red wine port sauce

[duckduck]

So for Ripert's halibut with grapes and red wine port sauce, what varietal of red wine would you suggest? I have a couple of wonderful ports, but not being much of a red wine drinker, I could use suggestions on the type of red wine.

[Michael Ruhlman]

Use half of some of that good port and half of a huge zinfandel.