Making a delicious homemade lemonade is quite simple. First, squeeze the juice from four lemons into a pitcher. Next, add half a cup of sugar and stir until it dissolves completely. After that, pour in four cups of cold water and mix well. Finally, add some ice cubes and lemon slices for garnish. Enjoy your refreshing drink! What is the most important step to ensure the lemonade is not too sour?
A) Adding ice cubes.