January 23rd is National Rhubarb Pie Day. Rhubarb is an herbaceous perennial plant. They have short, thick  edible rhizomes (stems) and large toxic leaves. The stalks are commonly used to make tarts and pies.Rubarb and strawberries is a popular combination. Though rhubarb is technically a vegetable, in the United States, a New York court decided in 1947 that [...]