What you do whit the plant after you pick the rhubarb?

Be sure to completely remove the leaves (they are toxic) then chop the stalks in medium sized pieces. You can eat these directly (they are very tart), cook them in a pan on the stove with sugar until they are soft, put them inside a pie crust with sugar and bake the pie, etc. They can be mixed with various fruits during cooking/baking (strawberries are common).

I've even been experimenting with using rhubarb in making ice cream. For this purpose after cooking, the rhubarb must be cooled and then passed through a food mill to remove all the fibers (their texture in unpleasant in ice cream).