We start by adding semolina to a large bowl, spraying it lightly with salted water, and rolling it between our fingers until it begins to form into tiny clumps. This process of spritzing and mixing continues little by little until the couscous has the right size, moisture-level, and texture. There's no exact recipe to follow - just like Ron's mother and grandmother, we rely on the feel of the granules against our palms to tell us when it is ready.