For millennia, humans have sought creative methods to produce frozen confections, dating back to ancient practices of sweetening and chilling snow. While contemporary advancements often involve sophisticated ice cream machines for churning and freezing, there remains a significant demand for alternative, no-churn approaches. Traditional ice cream makers can be cumbersome, expensive, or necessitate a lengthy pre-freezing step for their bowls, which can be inconvenient for spontaneous dessert cravings.
Many common no-churn ice cream recipes rely on dairy products such as evaporated or condensed milk combined with whipped cream. While these ingredients do facilitate the freezing process, they often impart an undesirable, almost metallic flavor that deviates from the pure essence of ice cream. Furthermore, these conventional methods typically fall short in replicating the rich, custardy undertones characteristic of classic French-style ice creams.
In her pursuit of a superior no-churn solution, renowned pastry expert Stella Parks discovered a revolutionary technique that has expanded the possibilities of homemade frozen treats. Her ingenious use of the humble egg has unlocked a vast array of creamy ice creams and airy fillings, perfect for creations ranging from indulgent French-style desserts to light, fluffy bases for frozen confections like homemade Klondike bars and delectable ice cream pies. The secret lies not merely in the addition of eggs, but in a meticulous, temperature-controlled process that maximizes their potential.
The innovation for achieving custardy French-style no-churn ice cream lies in a precise heating and whipping technique. This method involves gently heating a mixture of eggs and sugar over a double boiler until it reaches 160°F (71°C), a temperature that ensures food safety while also enhancing the eggs' capacity to incorporate air. Following this, the mixture is vigorously whipped in a stand mixer until it transforms into a pale, thick, and voluminous consistency reminiscent of soft-serve ice cream. Finally, whipped cream is carefully folded in, contributing to the rich, luxurious texture that defines a truly scoopable, French-style ice cream.
Expanding her no-churn expertise, Stella Parks also tackled the challenge of creating American- or Philadelphia-style ice cream without the distinctive custardy flavor, opting for a pure, fresh dairy profile. Her solution ingeniously utilizes Swiss meringue, demonstrating that egg whites, when properly prepared, can contribute to a light and airy texture without imparting the strong flavor associated with egg yolks. This technique is particularly valuable for frozen dessert fillings that require a lighter, yet structurally sound, consistency. The process begins by combining egg whites, sugar, salt, cream of tartar, and vanilla in a stand mixer. This mixture is then gently heated over steaming water, with constant stirring, until the egg whites achieve a stable consistency. After heating, the mixture is whipped at high speed in a stand mixer until it becomes glossy, fluffy, and forms stiff peaks. To transition this meringue into an ice cream base, heavy cream is whipped to stiff peaks, then milk is added to the meringue to aid in firming the final product. Finally, the whipped cream is gently folded into the meringue-milk mixture, resulting in a smooth, airy base ideal for various frozen desserts. This method yields a perfectly firm consistency, especially suited for frozen pies and bars, though its density makes it less ideal for standalone, scoopable ice cream. This innovative approach has opened up a new realm of summer treats, all achievable without an ice cream maker.