Gather your ingredients: frozen or fresh peach slices, granulated sugar, cold water, and lemon juice. Peel and slice fresh peaches if using.

In a high-speed blender, combine peach slices, sugar, cold water, and lemon juice. Blend on high for 1-2 minutes until smooth and creamy.

Pour the mixture into a metal loaf pan or freezer-safe container. Cover if necessary to prevent ice crystals.

Place the container in the freezer and chill for at least 4 hours until firm.

Before serving, let the sorbet sit at room temperature for about 5 minutes to soften slightly for easier scooping.