Creating creamy homemade pistachio pudding is simple if you follow these steps:

1. Combine Dry Ingredients: In a medium saucepan, whisk together the sugar, cornstarch, and salt until well combined.
2. Add Milk: Gradually add the whole milk to the dry mixture, whisking continuously to prevent lumps.
3. Cook Mixture: Place the saucepan over medium heat. Stir constantly until the mixture begins to thicken and bubble, about 10-15 minutes.
4. Add Flavoring: Once thickened, remove from heat and stir in the vanilla extract and crushed pistachios.
5. Color Adjustment: If desired, add a few drops of green food coloring to enhance the pudding’s vibrant color.
6. Transfer to Bowls: Pour the pudding into individual serving bowls or a large dish. Cover with plastic wrap, making sure it touches the surface to prevent a skin from forming.
7. Chill: Refrigerate for at least 2 hours or until the pudding is set.
8. Serve: Once ready, remove from the fridge and serve chilled, garnished with additional crushed pistachios if desired.

Following these steps will ensure that your creamy homemade pistachio pudding turns out perfectly every time.