A dignitary had asked the local Tao master to a dinner. The master arrived and was seated at a dinner table filled with delicious food. The master helped himself to some chicken, turkey, and a small glass of wine. The dignitary was surprised to see this and asked the master, “I thought you people did not eat meat or drink wine.” The master swallowed another bite of food and said “Is that so? Remember kind sir, that it is not what we put in our mouths that defile us, but what comes out.”
As to the co-existence of Taoism and Zen, look no further than the words of the great Zen scholar, Professor D.T. Suzuki, who said, "To ask a question about Zen is to ask a question about the Tao."