How to Make It
Rub the cut sides of the tomato onto the toast until the flesh is gone. Throw away the skins. Drizzle with olive oil and season with salt. Top each toast with a slice of Serrano ham. Drizzle with a little more olive oil and serve.
Place a grater over a large mixing bowl. Rub the cut sides of the tomatoes over the grater until the flesh is gone. Throw away the skins. Add 3 tablespoons of olive oil to the tomato in the bowl. Season with salt. Toast the bread. Spoon the tomato mixture onto the toast and top with a slice of ham. Drizzle with a little olive oil and serve.