sized (microwave safe) bowl, heat the chocolate (break into pieces if using large bars) & butter at 50% power in the microwave until mostly melted (about 2 minutes, but check after 1 minute and every 30 seconds after). stir until fully melted and smooth, then set aside.
3. in the bowl of an electric mixer, fitted with the whisk attachment, whisk the eggs on medium speed about 1 minute. while mixing, add sugar, vanilla, salt and water and continue whisking another minute or so, or until the mixture is very foamy, pale in color and has doubled in volume.
4. reduce mixer speed to low, and gradually pour in the (cooled) chocolate 