The phrase "cup celery" refers to measuring the amount of celery in a recipe using a measuring cup. It means to fill a measuring cup with chopped or sliced celery until it reaches the one cup mark. Full definition
Because cup for cup celery root has the same amount of dietary fiber as potatoes with only 1/3 of the carbohydrates. (downshiftology.com)
6 large or 8 medium celery stalks 1/3 cup walnuts, roughly chopped 2 tablespoons freshly squeezed lemon juice 2 tablespoons Dijon - style mustard 1 garlic clove, crushed 2 teaspoons agave nectar 1/2 teaspoon coarse sea salt or kosher salt 5 tablespoons extra-virgin olive oil Freshly milled black pepper 1 large Granny Smith apple 1/4 cup celery leaves, minced (humanesociety.org)
BIn same skillet, saute 1.5 cups onion & 3 cups celery in 2 cups butter. (angelaskitchen.com)