The First Scoop of Summer

I made this lemon ice cream on a warm afternoon when the kitchen windows were wide open. Fresh zest scented the custard as I stirred it over the stove. The first scoop was cool, creamy, and bright enough to make me close my eyes.

Why I Churn a Batch

This sugar-free lemon ice cream has the richness of a cooked custard and a fresh citrus finish. Allulose sweetens it without added sugar and helps it stay easier to scoop after freezing. I like making the base a day ahead, so churning feels like the only task left.

What Goes Into the Churn

• 2 cups heavy whipping cream
• 1 cup unsweetened almond milk
• 3/4 cup powdered allulose
• 4 large egg yolks
• 2 tablespoons finely grated lemon zest
• 1/4 cup fresh lemon juice
• 1 teaspoon vanilla extract
• 1/8 teaspoon fine salt

Stir, Chill, Churn

1. Warm the cream, almond milk, zest, and half the allulose in a saucepan until steaming.
2. Whisk the egg yolks with the remaining allulose and salt.
3. Slowly whisk some warm cream mixture into the yolks.
4. Pour the yolk mixture into the saucepan.
5. Cook over low heat, stirring constantly, until it reaches 170°F to 175°F (77°C to 79°C).
6. Strain the custard into a clean bowl.
7. Stir in the vanilla.
8. Cool, cover, and refrigerate for at least 4 hours.
9. Whisk the lemon juice into the cold custard.
10. Churn according to your ice cream maker’s instructions.
11. Transfer to a freezer-safe container.
12. Freeze for 2 hours for firmer scoops.

Ways to Serve a Scoop

• Add a few fresh raspberries.
• Sprinkle with extra lemon zest.
• Serve beside sliced strawberries.
• Scoop into chilled dessert bowls.
• Add a few toasted almond pieces.
• Pair with a crisp almond-flour cookie.
• Serve a small scoop after dinner.
• Top with unsweetened coconut flakes.
• Let the lemon flavor shine on its own.
• Sandwich a scoop between two cooled low-carb cookies.

Pro Tips

• Freeze your ice cream maker’s bowl for the time its manufacturer recommends. A thoroughly cold bowl helps the custard churn rather than remain liquid.
• Warm the cream gently and pour it into the yolks slowly. This gradual step helps the eggs blend into the custard without scrambling.
• Stir across the bottom of the saucepan as the custard cooks. Remove it from the heat when it reaches 170°F to 175°F (77°C to 79°C), then strain it promptly.
• Chill the base completely before churning. A cold custard freezes faster in the machine and gives the finished ice cream a smoother texture.
• Add the lemon juice to the cold base, just before churning. Keeping it out of the hot dairy reduces the chance of a grainy or curdled mixture.
• Give the container a short rest on the counter before scooping if the ice cream is very firm. Use a scoop warmed in water and dried well between servings.

FAQs

Is this ice cream completely sugar-free?
It contains no added sugar when made with unsweetened almond milk and allulose. Heavy cream and lemon juice may contain small amounts of naturally occurring sugar. Check the labels of your ingredients if you need exact figures for a serving.

Can I use a different sweetener?
You can try another powdered sweetener, but it may change how firmly the ice cream freezes. Allulose helps this recipe stay more scoopable than many alternatives. Follow your sweetener’s measuring guidance and expect the texture to differ.

Why did my custard turn grainy?
It may have become too hot and cooked the eggs unevenly, or the lemon juice may have gone into warm cream. Use low heat, stir constantly, and strain the custard after cooking. Wait until the base is thoroughly cold before whisking in the juice.

Can I make the base ahead of time?
Yes, keep the cooked custard covered in the refrigerator overnight. Add the lemon juice just before you pour the base into the machine. Stir it well first, since a little settling during chilling is normal.

How should I store the finished ice cream?
Keep it covered in a freezer-safe container for up to 2 weeks for the best flavor and texture. Press a piece of parchment against the surface before replacing the lid. If it freezes hard, let it soften briefly before scooping rather than trying to force a spoon through it.

Sugar-Free Lemon Ice Cream

This sugar-free lemon ice cream combines a rich cooked custard with fresh lemon zest and juice for a creamy, refreshing citrus dessert. Powdered allulose provides sweetness without added sugar and helps the churned ice cream remain scoopable after freezing. Prepare the custard ahead, chill thoroughly, and churn for a smooth homemade treat perfect for warm days.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 15 minutes mins

Chilling and Freezing Time 6 hours hrs 40 minutes mins

Total Time 7 hours hrs 15 minutes mins

Servings: 8 servings

Course: Dessert, Frozen Dessert, Ice Cream

Cuisine: American

Ingredients Equipment Method Notes

Ingredients

  

Lemon Custard Base

• 2 cups heavy whipping cream
• 1 cup unsweetened almond milk
• 3/4 cup powdered allulose divided
• 4 large egg yolks
• 2 tablespoons lemon zest finely grated
• 1/4 cup fresh lemon juice add to the chilled custard
• 1 teaspoon vanilla extract
• 1/8 teaspoon fine salt

Optional Toppings

• fresh raspberries for serving, optional
• fresh strawberries sliced, for serving, optional
• extra lemon zest for garnish, optional
• toasted almond pieces for serving, optional
• unsweetened coconut flakes for serving, optional

Equipment

• Ice Cream Maker
• Medium Saucepan
• Whisk
• Fine-Mesh Strainer
• Mixing bowls
• Instant-Read Thermometer
• Zester
• Freezer-Safe Container

Method

 

1. In a medium saucepan, combine the heavy whipping cream, almond milk, lemon zest, and half of the powdered allulose. Warm over medium-low heat until steaming, stirring occasionally. Do not let the mixture boil.
2. In a separate bowl, whisk the egg yolks with the remaining powdered allulose and the salt until smooth and well combined.
3. Slowly pour a small amount of the warm cream mixture into the egg yolks while whisking continuously. Gradually add more warm cream, whisking constantly to temper the yolks without scrambling them.
4. Pour the tempered yolk mixture back into the saucepan. Cook over low heat, stirring constantly and scraping the bottom of the pan, until the custard reaches 170–175°F (77–79°C) and is slightly thickened. Do not allow it to boil.
5. Immediately strain the custard through a fine-mesh strainer into a clean bowl to remove the lemon zest and any small cooked egg particles.
6. Stir the vanilla extract into the strained custard. Allow it to cool, then cover and refrigerate for at least 4 hours or until thoroughly cold. For convenience, the custard can chill overnight.
7. Once the custard is cold, whisk in the fresh lemon juice until evenly combined. Adding the juice at this stage helps reduce the chance of the dairy mixture curdling.
8. Pour the chilled lemon custard into a properly prepared ice cream maker. Churn according to the manufacturer’s instructions until thick and creamy.
9. Transfer the churned ice cream to a freezer-safe container and smooth the surface. Press parchment paper against the surface if desired, then cover with a lid.
10. Freeze for about 2 hours for firmer scoops. If the ice cream becomes very firm, let it sit at room temperature briefly before serving. Garnish with berries, extra lemon zest, toasted almonds, or unsweetened coconut flakes if desired.

Notes

Freeze the ice cream maker bowl for the length of time recommended by its manufacturer. Keep the heat low when cooking the custard, whisk the warm cream into the yolks gradually, and stir constantly to prevent the eggs from cooking unevenly. Straining the custard helps produce a smooth texture.

Make sure the custard is completely cold before adding the lemon juice and churning. Allulose helps the ice cream remain more scoopable than many other sweeteners, but alternative sweeteners may change the final texture. Follow the replacement sweetener’s measuring guidance if substituting.

This recipe contains no added sugar when prepared with unsweetened almond milk and allulose, although cream and lemon juice may contain small amounts of naturally occurring sugars. Check product labels if precise nutrition information is important. Store covered in a freezer-safe container for up to 2 weeks for the best flavor and texture. Press parchment against the surface before replacing the lid to help limit ice crystals.

One More Scoop, Please

I love hearing the churn finish and knowing a bowl of lemon ice cream is close. The custard takes a little attention, but most of the time is simply spent waiting for it to chill. When I finally sit down with a scoop, the creamy texture and bright lemon make the wait worthwhile. It is a lovely way to slow down on a warm day.

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