Scrub the potatoes and pat dry. With a fork, pierce each potato in 3 or
4 places. Arrange the potatoes in the microwave on a paper towel.
Microwave on high for 10 minutes, turning potatoes after the first 4 to 5
minutes. Cook until tender. Let stand for 5 minutes.
Meanwhile, place the shrimp in a medium bowl. Add the oil, lemon juice,
basil, and salt. Set aside for 10 minutes to allow the flavors to blend.
If desired, mince a clove of garlic and add to the shrimp mixture.
Cut the potatoes lengthwise down the center and squeeze to open. Spoon
the shrimp mixture over the top.