In the Genki Chapter 13 reading section, an exchange student describes going to a restaurant with her host family and unwittingly eating turtle for the first time. Her host-father insists it is tasty. Despite feeling uneasy about eating the mystery meat, she writes:
What is happening with this mix of し and ので? It seems the ので clause has some sense of "and because it ended up being tasty", while the し clause seems to relate to her reasoning before she started eating.