This peach ice cream recipe uses a real egg yolk custard base and a smart maceration step to pull the juice out of the fruit ahead of time, concentrating the flavor for a smooth, dense, old-fashioned scoop that tastes like actual peaches in every bite.
Toss the diced peaches with ¼ cup of the sugar and lemon juice. Let sit at room temperature for 30-45 minutes until they release their juice, then pulse half of the mixture in a blender 3-4 times to break it up, and set aside.
In a medium saucepan, combine the heavy cream, milk, remaining ½ cup sugar, and salt. Heat over medium until steaming and small bubbles form around the edge, without boiling.
Whisk the egg yolks in a bowl until lighter in color. Temper by slowly whisking in about ½ cup of the hot cream mixture, then whisk the tempered yolks back into the saucepan.
Return the pan to medium-low heat and cook, stirring constantly with a silicone spatula, for 5-8 minutes until the custard thickens and reaches 170-175°F on a thermometer.
Strain the hot custard through a fine-mesh sieve into a clean bowl. Stir in the vanilla extract, then set the bowl in an ice bath to cool for 10 minutes. Cover and refrigerate for at least 4 hours or overnight.
Stir the macerated peach mixture (juice and all) into the fully chilled custard. Taste and add an extra pinch of salt if needed.
Pour the mixture into your ice cream maker and churn for 20-25 minutes until it reaches a soft-serve consistency and pulls away from the sides of the bowl.
Transfer the churned ice cream to a freezer-safe container and press a piece of parchment or plastic wrap directly onto the surface before sealing. Freeze for at least 4 hours until firm.
Notes
Use peaches that give slightly under gentle pressure near the stem end; underripe fruit tastes thin and diluted once frozen.
Don't skip the ice bath step for the custard. Cooling it slowly at room temperature holds it in the danger zone for bacteria growth for too long.
Chill the custard until it's genuinely cold, not just cool, before churning; a warm base churns into a soft, melty texture that never firms up properly.
Avoid overfilling the ice cream maker's bowl, since the mixture expands as it churns and can overflow if the bowl is more than two-thirds full.
Add mix-ins like extra peach chunks, toasted pecans, or a caramel swirl in the last few minutes of churning so they stay distributed rather than sinking.
Freeze the ice cream in a wide, shallow container rather than a tall, narrow one, since it firms up faster and more evenly.
Let the ice cream sit at room temperature for 5 to 10 minutes before scooping if it's been in the freezer for more than a day.
Store in an airtight, freezer-safe container for up to 2 weeks for the best texture. Press parchment or plastic wrap against the surface to prevent ice crystals.
If you'd like more distinct peach pieces throughout, reserve a few tablespoons of the diced peaches and fold them in during the last 2 minutes of churning.