Rinse the mushrooms and cut off their tails. Heat a pot of water and blanch the shiitakes, drain and set aside.
Heat the olive oil in a pan, add the garlic clove and some thyme. When you smell the garlic, put the mushrooms in the pan.
Let them cook for 1 to 2 minutes and then add the scallops cut in half so that they are less thick. Cook over medium heat for 1 minute on one side and 30 seconds on the other.
Season with salt and pepper, the rest of the thyme, and mix well before serving!