Sauteed spinach is a simple and healthy side. This version is seasoned with garlic and coarse salt.
In a large skillet, heat olive oil over medium-high heat. Add garlic; saute until it just begins to take on color, about 30 seconds. Add spinach, and toss well, coating with oil.
Cook the spinach, tossing frequently, until the leaves turn bright green and have slightly wilted, about 2 minutes. Season spinach with salt, and drizzle the balsamic vinegar over the spinach; serve immediately.