August 15, 2012

In search of panna cotta with just the right jiggle

By Russ Parsons / McClatchy Newspapers

I've lately spent a good chunk of my time surrounded by spreadsheets, crumpled paper packets, cartons of dairy products and dirty ramekins. Josef Centeno has a lot to answer for.

RECIPE
click image to enlarge

At its base, panna cotta is just sweetened dairy held together with gelatin ... but some are better than others.

McClatchy Newspapers

I recently stopped in at his Baco Mercat restaurant in Los Angeles for a lunch that ended with one of the best panna cottas I've ever had. You know what I mean: Delicately sweet, it was like a dream of cream held together by faith and just a little bit of gelatin.

It struck me – how long had it been since I'd had panna cotta? A few years ago, you couldn't go anywhere without seeing it. Then, just as suddenly, it went away. It makes no sense. A good panna cotta is as good as dessert gets. Vowing I would never again leave my panna cotta cravings to the whims of restaurant fashion, I determined to master the dish.

How hard could that be? There's not a lot to a panna cotta recipe. It's just dairy, sweetened and bound with gelatin. A bit of vanilla for flavor. That's basically it. Why, then, are some of them so wonderful and others so blah?

That's where the spreadsheet came in. Never underestimate the lengths a food geek will go to in order to master a simple dish. I analyzed a dozen recipes for panna cotta for three main attributes: the percentage of butterfat, the amount of gelatin and the sweetness.

THE JIGGLE:

The reason for the gelatin is obvious – a perfect panna cotta should have just enough that it seems the cream is barely holding together. It quivers when you touch it. When there's too much gelatin, the custard feels stiff and cheesy. Too little and, well, you've got a puddle on the plate when you unmold it.

Breaking the recipes into pieces, I found ratios of gelatin to dairy ranging from ½ teaspoon to almost 3 teaspoons per cup. After a day in the kitchen experimenting with various amounts, I found the best consistency was at the shaky end of the spectrum – ¾ teaspoon per cup.

THE CREAM:

The butterfat takes a little explaining. It's not a calorie thing, but I find too much of it leaves your mouth feeling coated and thick; the ideal panna cotta tastes light and clean.

Fortunately, analyzing butterfat doesn't require sending it off to a lab. You can simply average the percentage of butterfat in the various dairy components. Heavy cream is 36 percent, half-and-half is 12 percent and whole milk is 3.25 percent. Therefore, a recipe that calls for a cup of half-and-half and 2 cups of cream will have a butterfat percentage of 28 percent.

I tested dairy mixes ranging from 34 percent to 18 percent (resisting the urge to completely geek out on this, I did it in 5 percent intervals. If you want to dial it in tighter, you're on your own). Until you get toward the lowest end of that spectrum, the less butterfat the better – though when I tasted the 23 percent next to the 18 percent, I did find that the slightly higher fat content carried the flavor better while still tasting fresh.

THE SWEETNESS:

Sweetness was relatively easy to figure. I did batches ranging from ¼ to ½ cup sugar, stepping up by the tablespoon. I was looking for a panna cotta that was definitely sweetened but not sweet, if you know what I mean. Again, light and clean. Five tablespoons was perfect.

So, 2½ cups of cream and 1½ cups of whole milk, plus 5 tablespoons of sugar, set with 1 tablespoon of gelatin. I'd cracked the code!

(Continued on page 2)

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