I didn't make it to the store to buy fancy butter for the radish sandwiches but they still turned out well. All we did is butter some lightly toasted (homemade) bread, top with sliced radish and pea shoot and voila!
This is our first time having pea shoot and it's quite tasty! It tastes a lot like peas, imagine that? It's not so easy to bite through the pea shoot which was a little problematic for the sandwich. Mike said he would have enjoyed a little more flavor on the sandwich but I thought it was good as is.