01 - Place diced mangoes and lemon juice in a blender or food processor. Puree until completely smooth.
02 - In a medium saucepan, whisk together the sugar and cornstarch until well blended.
03 - Add the mango purée and coconut milk to the saucepan. Whisk until smooth and no lumps remain.
04 - Place the saucepan over medium heat. Cook, whisking constantly, until the mixture starts to thicken and bubble (about 5–8 minutes).
05 - Once thickened, remove from heat. Stir in the vanilla extract and optional turmeric for color.
06 - Pour the curd into a clean jar or bowl. Let cool to room temperature, then refrigerate for at least 2 hours to set further.
07 - Serve chilled as a spread, dessert layer, or filling.