A delightful and tangy lemon sauce perfect for desserts or as a topping for pancakes and waffles.
Combine the sugar, cornstarch, and salt in a saucepan.
Mixing the dry ingredients first helps prevent lumps from forming.
Gradually add the boiling water to the dry mixture, whisking constantly.
Adding the water slowly ensures a smooth consistency.
Cook the mixture over medium heat, stirring frequently, until it thickens and becomes clear.
Keep an eye on the sauce to avoid overcooking, which can make it too thick.
Stir in the butter, lemon juice, and grated lemon rind until fully incorporated.
Adding the lemon juice at the end preserves its fresh flavor.
Serve the sauce warm or let it cool to room temperature before using.
This sauce can be served warm for a comforting touch or chilled for a refreshing twist.