Place the tomatoes in a mixing bowl. Season well with salt and pepper and stir in the finely grated garlic, vinegar and extra virgin oil. Leave to sit for 10 minutes at room temperature.
Halve the cherry tomatoes and put them in the bowl with the corn. Halve the shallots, then thinly slice them before adding them to the bowl. Cut the piece of Vietnamese sausage in quarters ...
Slice tomatoes crosswise into 1/2-inch-thick slices 4 slices per tomato Arrange 2 to 3 slices on each salad plate Sprinkle the mozzarella on top of each tomato.