Sieve the powdered sugar.It is extremely important to sift your icing sugar well - three times if you have to! There shouldn't be any lumps or granules of powdered sugar, otherwise, it will show in the final texture of your glaze.
3 cups powdered sugar
Add the remaining ingredients.Add 3 tablespoons of milk and the lemon juice to the powdered sugar and whisk the ingredients well. You can add more milk to the mixture to help thin the consistency, but 3 tablespoons are a good starting point.Only once you are happy with the consistency should you add the lemon zest. This is also, in our opinion, a crucial addition that will add that extra lemony punch!
3-6 tablespoons 45-90 ml milk, 1 tablespoon 15 ml lemon juice, Zest of 2 lemons
Glaze your cake.You do not need to heat the glaze before pouring it over your angel food cake. You can simply give it a good whisk and pour immediately. This lemon glaze recipe is fantastic because it has a nice thick consistency that will sit beautifully on top of the cake instead of thinning or running down completely.
Notes
Unfortunately, the powdered sugar is constantly absorbing the moisture. This is why glazes are surprisingly technical; because you have to get the perfect glaze consistency to achieve the visual results you want. For this specific recipe, the glaze should sit on the cake thickly without running down all the way to the bottom. It should have some movement to it so it can create a drip effect. It should also not be transparent, which means that it is too thin.To thin a glaze, simply add some more milk, but only a bit at a time. You will be surprised about how big of a difference a tiny amount of liquid makes! And, to thicken it, simply add more sifted powdered sugar.