The secret to meltingly tender on the inside, crisp on the outside greek potatoes can be elusive. The flavor is almost right with roasting, but the soft fluffy interiors tend to wind up a no-go. Parboiling the potatoes before roasting yields the right texture, but that extra step can be a hassle. But adding water to the roasting pan--along with a generous amount of olive oil, lemon juice, and spices--proves the trick to easy--and delicious--potatoes.