Sugar Free Low Carb Keto Italian Lemon Zabaglione

This delicious classic keto Italian lemon zabaglione needs just 4 simple ingredients and 10 minutes of time to make! Just 3 grams of carbs!

A Classic Italian Dessert Made the Easiest Way

Lemon zabaglione is considered a classic Italian dessert, traditionally made with rich egg yolks, sugar, and dessert wines like Marsala or Vin Santo.

Over the years, I’ve learned that the easiest way to make it at home is using a double boiler and keeping the heat low and steady.

This recipe starts with a simple egg yolk mixture, no flour, no egg whites, no baking -just yolks, sweetener, lemon juice, and gentle heat.

Cooking it over a pot of water instead of direct heat gives you full control and prevents scrambling. The key is low heat, constant whisking, and patience.

If you’ve never made zabaglione before, don’t overthink it. This is truly a great way to impress guests without a lot of effort.

About the Wine (and Alcohol Content)

Traditionally, zabaglione is made with sweet wine, most often Marsala wine, though other dessert wines like Vin Santo are also used depending on the Italian version and region.

For my lemon zabaglione, I used a dry white wine, which keeps the flavor light and lets the lemon shine. During cooking, the alcohol content cooks off gently as the egg mixture thickens, leaving behind flavor without tasting boozy.

That said, this dessert is just as delicious without wine.

Wine-Free Option

If you prefer to skip alcohol altogether:

• Simply replace the wine with water
• You’ll still get a smooth, creamy, traditional zabaglione texture

This makes it perfect for a dinner party, holidays, or anyone avoiding alcohol.

Texture Matters: Low Speed, Low Heat, Big Results

The secret to a perfect lemon zabaglione is resisting the urge to rush.

• Keep the heat low
• Whisk constantly at a steady, low speed
• Scrape the bottom of the bowl often so nothing sticks

As the mixture thickens, it will turn glossy and pale yellow. This is where zabaglione differs from lemon curd, it thickens through air and gentle heat, not butter or starch.

Once finished, it can be served:

• Warm
• At room temperature
• Or chilled

All three are delicious, depending on your favorite way to enjoy it.

How I Serve Lemon Zabaglione

My favorite way to serve this simple Italian dessert is spooned over fresh berries or fresh fruits. The acidity of the fruit balances the richness of the egg yolks perfectly, especially after a heavy meal.

Other serving ideas:

It’s a wonderful option for anyone with a sweet tooth who doesn’t want a heavy slice of cake.

Making It Low Carb (and Still Traditional)

Because this recipe relies on egg yolks and gentle cooking rather than flour or starch, it’s naturally low carb and works well for those following a keto diet or simply cutting back on sugar.

Using allulose keeps the texture smooth and prevents crystallization, which is especially important for egg-based desserts like this. It’s one of the reasons this recipe fits seamlessly into my style of cooking, traditional flavors, modern ingredients.

When I Turned It Into a Mascarpone Cream

To make more servings, I turned this classic version of lemon zabaglione into a mascarpone-based cream by folding in mascarpone cheese and a little heavy cream. This creates a softer, mousse-like texture that’s slightly less yellow and a bit more mild in lemon flavor.

Honestly, I was nervous about this version.

But when my dad, who is Italian and Sicilian-tried both, he loved them equally. He even called me the next day to tell me the truth (and if you know Italian dads, you know they will tell you the truth).

He also loved my parmesan biscotti served with stracciatella soup, which made the whole meal feel very traditional and very personal.

Lemon Zabaglione Mascarpone Cream (To Make More Servings)

If you’d like to stretch this recipe to serve more people, you can turn it into a lemon zabaglione mascarpone cream. This version is slightly less yellow and less lemon-forward, but still creamy, smooth, and absolutely delicious.

This is exactly how I made it to increase servings.

Additional Ingredients

• ¾ cup mascarpone cheese
• 2 tablespoons heavy cream

How to Make the Mascarpone Version

1. Once the zabaglione has finished cooking, let it cool slightly.
2. In a separate bowl, whisk the mascarpone until smooth.
3. Whisk 2–3 tablespoons of the zabaglione into the mascarpone to loosen it.
4. Gently fold the mascarpone mixture back into the remaining zabaglione.
5. Stir in the heavy cream until smooth and spoonable.

Yield & Texture Notes

• Increases the yield to about 1¾–2 cups, depending on how gently it’s folded
• Texture becomes mousse-like and creamy
• Color will be lighter and less yellow
• Lemon flavor is softer but still present

Lemon Zabaglione Mascarpone Cream

• Refrigerate in an airtight container for up to 3 days.
• Texture will firm up slightly when cold.
• Stir gently before serving to restore creaminess.
• Best served chilled or just slightly cool.
• Do not freeze, as texture may separate.

Serve either version with berries, biscotti, or alongside another lemon dessert for an elegant finish. For Christmas I made my Almond Amaretti Cookies from my cookbook, Naturally Keto.

Need help meal planning? My weekly Midlife Macro Meal Plans are available each week using all my recipes for low-carb meals, and snacks. 

If you’re following a classic keto diet, this meal plan works for both low carb, midlife and classic keto approaches, sent directly to your inbox. Easy meals each night of the week! Shopping list is done for you! Want a sample plan?