I have a question about the recipe "Cory Schreiber & Julie Richardson's Rhubarb Buckle with Ginger Crumb" from Genius Recipes. How many cups of rhubarb should I get from one pound? I have my own rhubarb plants but no kitchen scale. I would love to make this but it would be helpful to know if it is 2 cups of sliced rhubarb, for example. Thank you!