Recipe Spotlight

Buttermilk Panna Cotta

Interested in a luxurious make-ahead dessert that comes together with just a few strokes of a whisk? Read on.

Published Apr. 1, 2020.

My Goals and Discoveries

Tangy, rich flavor

We cut the richness of heavy cream with tangy buttermilk and add a vanilla bean for a hint of floral complexity.

No curdling

Lean buttermilk can curdle at temperatures as low as 110 degrees, so we heat the heavy cream, bloomed gelatin, and sugar in a saucepan and then wait for the mixture to cool before stirring in the buttermilk.

Soft but set texture

The right ratio of gelatin to cream and buttermilk gives our panna cotta just enough structure to hold its shape when unmolded.


Buttermilk-Vanilla Panna Cotta with Berries and Honey

Interested in a luxurious make-ahead dessert that comes together with just a few strokes of a whisk? Read on.
Get the Recipe

I have a long history with panna cotta. I figure I’ve made at least 1,000 batches, because it has been on the dessert menu of every restaurant I’ve ever worked at. No wonder: Panna cotta is pure in flavor, endlessly adaptable, and ridiculously easy to make. It is also prepared in advance. Each of these perks makes it a recipe that all cooks should know.

Panna cotta (Italian for “cooked cream”) is made by setting sugar-sweetened cream and often milk, yogurt, or buttermilk with gelatin to produce a luscious, wobbly, opaque dessert with a clean, milky taste. The usual procedure is to warm the dairy with sugar and then stir in bloomed gelatin until it dissolves. The mixture is then divided among ramekins, chilled for at least 6 hours, and unmolded (it’s also lovely served straight from small glasses).

As easy as panna cotta is to make, you still need to use just the right ratio of ingredients to achieve the perfect lush consistency. Also, the gelatin must be handled properly: Too much yields a firm, rubbery mass, and if there is too little or it is mishandled, you’ll end up with dessert soup.

Buttermilk Makes It Better

I’ve always preferred panna cotta made with equal parts buttermilk and heavy cream. The buttermilk’s tangy edge adds depth and moderates the richness of the heavy cream, and the heavy cream plays an important practical role: It can be heated past 150 degrees—the temperature at which I have found that gelatin reliably dissolves and flavorings can be infused into it—without curdling. Curdling happens when a protein in dairy called casein clumps when heated. But heavy cream has enough fat to dilute the casein molecules, preventing clumps. Since lean buttermilk can curdle at temperatures as low as 110 degrees, I like to heat the cream, sugar, and bloomed gelatin and then wait for the mixture to cool before stirring in the buttermilk.

Gelatin 101

Now, about gelatin, the key—and somewhat temperamental—ingredient in panna cotta. I started by “blooming” it, meaning I hydrated it in cold water.

There are two methods for blooming powdered gelatin. The most common is to sprinkle it in an even layer on a dish of cold water, where it slowly hydrates. For my panna cotta, I found that the other approach, called “bulking,” was even easier. It’s done by whisking the gelatin together with sugar (or another dry ingredient) before mixing it into water—or, in this case, cream, which contains plenty of water. The sugar helps separate the gelatin granules so that they remain independent while they disperse throughout the watery liquid and can hydrate thoroughly and evenly.

All About Gelatin

What It Is: Gelatin is made by boiling collagen-rich animal tissue in water to unravel the collagen into long protein strands. The gelatin is then extracted from the liquid and dried to create granules (powder).

How It Works: Achieving properly gelled gelatin is a two-step process. First, it must be bloomed, or hydrated, in cool water. The cool water penetrates slowly through each granule of gelatin, ensuring that it hydrates fully and dissolves. (If you skip blooming and add gelatin directly to hot water, the surface of each granule will rapidly hydrate and stick to its neighbors in clumps, while the interiors of the granules remain unhydrated and undissolved.)

The second step to properly gelled gelatin is heating, which causes the protein molecules to dissolve so that the mixture is fluid. Then, as the mixture cools to about body temperature, the strands tangle together, forming a mesh that slows the flow of the liquid, thickening it. Finally, after enough time has elapsed, that mesh is sturdy enough to stop the liquid from flowing altogether, turning it into a solid gel.

Next, I heated the mixture to dissolve the gelatin. As the mixture cooled, it set into a solid gel.

To serve eight, I thickened 4 cups of dairy with 2 teaspoons of gelatin. This was just the right amount to produce a satiny‑smooth, lush dessert that managed to be ethereal and creamy at the same time. I whisked the gelatin together with sugar (½ cup for modest sweetness) and a pinch of salt to enhance flavor, added 2 cups of cold cream, and let the mixture sit for 5 minutes. Next, I heated the mixture until it reached 150 degrees and the gelatin had dissolved. Finally, I let the cream-sugar-gelatin combination cool to about 105 degrees before stirring in 2 cups of buttermilk. Now it was ready to be portioned and chilled.

The Right Way to Unmold Panna Cotta

Many recipes recommend dipping the ramekins in hot water to help release the panna cotta, but we found this method ineffective. The walls of the ramekins are too thick to transfer enough heat to loosen the dessert. Here is a better way.

1. Run paring knife around inside edge of ramekin to loosen panna cotta.

2. Cover ramekin with serving plate and invert panna cotta onto plate, jiggling ramekin if necessary.

Fancy Finishes

With my basic recipe complete, I capitalized on one of the many advantages of panna cotta: It takes beautifully to flavorings. I made one version infused with an aromatic vanilla bean and then garnished with a drizzle of honey and fresh raspberries and blackberries—an elegant take on berries and cream. Then, for something different yet still luxurious, I steeped grapefruit zest in the cream and garnished the panna cotta with crunchy caramel-coated almonds. But my hands-down favorite was Thai basil–infused panna cotta topped with strawberries that I had macerated with sugar and black pepper.

Buttermilk-Vanilla Panna Cotta with Berries and Honey

Interested in a luxurious make-ahead dessert that comes together with just a few strokes of a whisk? Read on.
Get the Recipe


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